Every question has a number for an answer and two tips. Give yours a category of its own, like “Our friends”, and pick only that one in your room for a game about yourselves.
How many points did Manchester City collect in 2017–18, the most in any Premier League season?
100 points
Tip 1: They won 32 of their 38 games that season.
Tip 2: They finished 19 points clear of Manchester United.
SourceDerby County set the record for fewest points in a Premier League season in 2007–08. How many did they get?
11 points
Tip 1: They won just once all season.
Tip 2: Southampton's dreadful 2024–25 side still finished above this mark.
SourceHow many league goals did Manchester City score in 2017–18, the Premier League season record?
106 goals
Tip 1: It works out at close to three goals per game.
Tip 2: Their goal difference that season was +79.
SourceArsenal's unbeaten Premier League run ended in October 2004. How many matches did it last?
49 matches
Tip 1: It began in May 2003 and covered the whole Invincibles season.
Tip 2: It lasted well over a full 38-game season, but not two.
SourceChelsea went unbeaten at home in the league from March 2004 to October 2008. How many home matches was that?
86 matches
Tip 1: That is more than four full seasons of home games.
Tip 2: A season has 19 home games.
SourceHow many league goals did Chelsea concede in 2004–05, the fewest ever in a Premier League season?
15 goals
Tip 1: They kept a record number of clean sheets that year.
Tip 2: It was less than one goal every two games.
SourceHow many goals did Sheffield United concede in 2023–24, the most in a Premier League season?
104 goals
Tip 1: They kept only one clean sheet all year.
Tip 2: It works out at more than two and a half goals per game.
SourceHow many league goals did Erling Haaland score in 2022–23, the Premier League single-season record?
36 goals
Tip 1: It was his first season at Manchester City.
Tip 2: It is close to one goal per game across a 38-game season.
SourceHow many Premier League goals did Alan Shearer score, the all-time record?
260 goals
Tip 1: He played 441 games, for Blackburn Rovers and Newcastle United.
Tip 2: Harry Kane is second with more than 200.
SourceJames Milner holds the record for Premier League appearances. How many did he have by May 2026?
658 appearances
Tip 1: He has appeared in every season since 2002–03.
Tip 2: Gareth Barry held the record before him with just over 650.
SourceShane Long scored the fastest Premier League goal, against Watford in 2019. How many seconds into the game?
7.69 seconds
Tip 1: He was playing for Southampton.
Tip 2: It took less than ten seconds.
SourceSadio Mané scored the fastest Premier League hat-trick in 2015. How many seconds did it take him from first goal to third?
176 seconds
Tip 1: He was playing for Southampton against Aston Villa.
Tip 2: It took less than three minutes.
SourceWhat is the highest attendance for a Premier League match: Tottenham v Arsenal at Wembley in 2018?
83,222 people
Tip 1: Spurs were using Wembley while their new stadium was built.
Tip 2: It was well over 80,000.
SourceWhat is the lowest attendance for a Premier League match: Wimbledon v Everton at Selhurst Park in January 1993?
3,039 people
Tip 1: Wimbledon were sharing a ground with Crystal Palace.
Tip 2: It was under 5,000.
SourceHow old was John Burridge when he became the oldest Premier League player, for Manchester City in 1995?
43 years old
Tip 1: He was a goalkeeper.
Tip 2: He was past his 40th birthday.
SourceHow old was Teddy Sheringham when he became the oldest Premier League goalscorer, in December 2006?
40 years old
Tip 1: He was playing for West Ham against Portsmouth.
Tip 2: He had scored a hat-trick at 37, also a record.
SourceGoalkeeper Brad Friedel holds the record for consecutive Premier League appearances. How many did he make in a row?
310 appearances
Tip 1: The run lasted from August 2004 to October 2012.
Tip 2: That is a little over eight full seasons.
SourceMarcus Bent holds the record for playing for the most Premier League clubs. How many?
8 clubs
Tip 1: They included Everton, Crystal Palace and Blackburn Rovers.
Tip 2: Craig Bellamy scored for seven, and Bent played for more.
SourceSergio Agüero holds the record for Premier League hat-tricks. How many did he score?
12 hat-tricks
Tip 1: All of them came for Manchester City.
Tip 2: It is more than ten.
SourceAlan Shearer holds the record for hat-tricks in one Premier League season. How many did he score in 1995–96?
5 hat-tricks
Tip 1: He was playing for Blackburn Rovers.
Tip 2: That is one every seven or eight games.
SourceRyan Giggs holds the Premier League record for assists. How many did he make?
162 assists
Tip 1: He played 632 games, all for Manchester United.
Tip 2: Kevin De Bruyne is second with just under 120.
SourcePeter Crouch holds the Premier League record for headed goals. How many did he score with his head?
53 goals
Tip 1: He stood over two metres tall.
Tip 2: It is more than 50.
SourceFrank Lampard holds the Premier League record for goals from outside the box. How many?
41 goals
Tip 1: He scored 177 league goals in total.
Tip 2: It is close to a quarter of his league goals.
SourceAlan Shearer holds the Premier League record for penalties scored. How many did he convert?
56 penalties
Tip 1: He took 67 in total.
Tip 2: Frank Lampard is second with 43.
SourceDavid Beckham holds the Premier League record for direct free-kick goals. How many did he score?
18 goals
Tip 1: He played 265 Premier League games.
Tip 2: James Ward-Prowse fell just one short.
SourceRichard Dunne holds an unwanted Premier League record. How many own goals did he score?
10 own goals
Tip 1: He was a centre-back for clubs such as Manchester City.
Tip 2: It is a round number.
SourceEverton hold the record for red cards in Premier League history. How many had they received by May 2026?
113 red cards
Tip 1: They are one of the few clubs ever-present since 1992.
Tip 2: It is more than 100.
SourceChelsea set the record for yellow cards in a Premier League season in 2023–24. How many?
105 yellow cards
Tip 1: It averages close to three a game.
Tip 2: It is more than 100.
SourceCoventry City hold the record for the fewest yellow cards in a Premier League season, in 1993–94. How many did they get?
12 yellow cards
Tip 1: That season had 42 games each.
Tip 2: It was far less than one per game.
SourceWhat is the biggest title-winning margin in Premier League history, set in 2017–18?
19 points
Tip 1: Manchester City beat Manchester United to the title.
Tip 2: It is more than six wins' worth of points.
SourceLiverpool hold the record for winning the title earliest, in 2019–20. How many games did they have left to play?
7 games
Tip 1: The season was interrupted by the pandemic.
Tip 2: They clinched it before the end of June.
SourceLiverpool hold the record for the most points without winning the league, in 2018–19. How many did they get?
97 points
Tip 1: They lost only one game all season.
Tip 2: They finished one point behind Manchester City.
SourceManchester United hold the record for the fewest points by a champion, in 1996–97. How many did they get?
75 points
Tip 1: They averaged just under two points a game.
Tip 2: It is fewer than 80.
SourceWest Ham were relegated in 2002–03 with the most points of any relegated team in a 38-game season. How many did they have?
42 points
Tip 1: 40 points is the famous survival target.
Tip 2: They were above that target and still went down.
SourceIpswich Town hold the 38-game record for points by a newly promoted team, in 2000–01. How many did they get?
66 points
Tip 1: They finished high enough to reach Europe.
Tip 2: It is well above the usual survival target of 40.
SourceManchester United have the most Premier League wins. How many had they reached by May 2026?
Liverpool set the record run of consecutive Premier League home wins between 2019 and 2020. How many?
24 wins
Tip 1: It started in February 2019 and ended in July 2020.
Tip 2: That is more than one full season of home games.
SourceWhat is the longest winning run in Premier League history, shared by Manchester City (2017) and Liverpool (2019–20)?
18 wins
Tip 1: City's run lasted from August to December.
Tip 2: It is almost half a season.
SourceDerby County hold the record for consecutive matches without a win. How many games did the run last in 2007–08?
32 matches
Tip 1: They won one game all season, in September.
Tip 2: The run covered the rest of the 38-game season.
SourceSunderland hold the record for consecutive Premier League defeats, across 2002–03 and 2005–06. How many did they lose in a row?
20 defeats
Tip 1: The run spanned two separate spells in the top flight.
Tip 2: It is more than half a season of games.
SourceArsenal hold the record for scoring in consecutive Premier League matches, from May 2001 to November 2002. How many?
55 matches
Tip 1: They scored in every game of 2001–02.
Tip 2: That is well over one full season.
SourceManchester United hold the record for fewest goals conceded at home in a season, in 1994–95. How many did they let in?
4 goals
Tip 1: That season had 21 home games each.
Tip 2: It is fewer than five.
SourceFulham hold the record for fewest home goals in a season, in 2020–21. How many did they score at home?
9 goals
Tip 1: Crowds were mostly absent that season.
Tip 2: It is fewer than ten across 19 home games.
SourceChelsea hold the record for home goals in a season, in 2009–10. How many did they score at Stamford Bridge?
68 goals
Tip 1: Their home goal difference was +54.
Tip 2: It is well over three a game.
SourceBlackpool hold the record for most goals by a relegated team, in 2010–11. How many did they score?
55 goals
Tip 1: Ian Holloway's side were famous for attacking football.
Tip 2: It is about a goal and a half per game.
SourceHarry Kane holds the record for Premier League goals in a calendar year, set in 2017. How many?
39 goals
Tip 1: He played for Tottenham Hotspur.
Tip 2: It beats Haaland's best single-season total.
SourceJamie Vardy holds the record for scoring in consecutive Premier League matches, in 2015. How many in a row?
11 matches
Tip 1: It ran from August to late November.
Tip 2: It was during Leicester's title-winning season.
SourceAdam Le Fondre holds the record for goals as a substitute in one Premier League season, in 2012–13. How many?
How many Premier League titles have Manchester United won, the most by any club?
13 titles
Tip 1: All of them came between 1993 and 2013.
Tip 2: It is more than ten.
SourceChelsea hold the record for clean sheets in a Premier League season, in 2004–05. How many did they keep?
25 clean sheets
Tip 1: They played 38 games.
Tip 2: They kept one in about two of every three games.
SourceRoughly how many species of land plants are known to botanists?
410,000 species
Tip 1: Land plants include mosses, ferns, conifers and flowering plants.
Tip 2: Flowering plants alone make up the large majority of the total, which is well above 100,000 but below a million.
SourceIn what year did Charles Frederick Worth open the first authentic haute couture house in Paris?
1858
Tip 1: Worth was an English-born designer working in the French capital.
Tip 2: This was in the middle of the 19th century, during the Second French Empire.
SourceWhat is the maximum percentage of carbon that iron can stably hold, forming a compound called cementite?
6.67%
Tip 1: Steel typically contains only a small fraction of this carbon.
Tip 2: The limit is well above steel's roughly 1% carbon but far below 20%.
SourceAbove what temperature in degrees Celsius is it necessary to heat iron ore to smelt it?
1,250 °C
Tip 1: Early Bronze Age kilns could not reach this temperature easily.
Tip 2: It is well above the roughly 1,085 degrees Celsius at which copper melts.
SourceApproximately how many tons of food are irradiated each year worldwide to preserve it?
500,000 tons
Tip 1: Food irradiation uses beta particles or gamma rays from sources such as cobalt-60.
Tip 2: The practice is used in over 40 countries, yet the total is far smaller than a million tons.
SourceIn what year did the World Health Organization propose its definition of health as physical, mental and social well-being, not merely the absence of disease?
1948
Tip 1: It came in the World Health Organization's very first years.
Tip 2: It came in the years right after the Second World War.
SourceIn the United Kingdom, what is the maximum alcohol by volume percentage that "low-alcohol beer" can contain?
1.2%
Tip 1: A normal beer is often around 4 to 5 percent ABV.
Tip 2: De-alcoholised beer in the UK must be under 0.5%, and low-alcohol beer is allowed a little more than double that.
SourceIn what year did Jacob Bernoulli introduce the mathematical constant e while studying continuous compounding of interest?
1683
Tip 1: The constant is roughly 2.718 and is the base of natural logarithms.
Tip 2: This was in the late 17th century, decades before Euler gave it the letter e.
SourceIn 1958, the United States recorded 763,094 measles cases. How many deaths resulted?
552 deaths
Tip 1: This was before the measles vaccine was introduced in the United States.
Tip 2: The death toll was in the hundreds, well under a thousand.
SourceHow long is the Ganges river, from its source in the Himalayas to its mouth, in kilometres, by the most common figure?
2,525 km
Tip 1: It flows through India and Bangladesh.
Tip 2: It is longer than the Rhine but shorter than the Nile, and sources differ slightly.
SourceWhat percentage of Earth's atmosphere is argon?
0.92%
Tip 1: Argon is the third most abundant gas in the air, after nitrogen and oxygen.
Tip 2: It is a noble gas and makes up less than one percent of the air.
SourceIn what year did Andreas Vesalius publish his book De humani corporis fabrica?
1543
Tip 1: Vesalius was a professor of anatomy at the University of Padua.
Tip 2: The year is the same one in which Copernicus published his heliocentric work.
SourceHow high is Mount Damavand, the highest volcano in Asia and the highest point in Iran, in metres?
5,610 metres
Tip 1: It is a dormant stratovolcano in the Alborz range.
Tip 2: It is higher than Mont Blanc but lower than Mount Kilimanjaro.
SourceWhat is the diameter of Earth's Moon, in kilometres?
3,474 km
Tip 1: It is a bit over a quarter of Earth's diameter.
Tip 2: It is smaller than the width of Australia but larger than that of Pluto.
SourceAbout how many billion neurons does the human brain contain?
86 billion neurons
Tip 1: Neurons communicate with one another through synapses.
Tip 2: The number is far more than there are people on Earth, but fewer than a trillion.
SourceWhat is the melting temperature of pure fused silica glass, in degrees Celsius?
1,723 °C
Tip 1: Its high melting point and viscosity make it hard to work with.
Tip 2: It is hotter than a typical iron-smelting furnace, but below 2,000 degrees Celsius.
SourceAt about what average speed does Earth travel on its orbit around the Sun, in kilometres per second?
30 km/s
Tip 1: A complete orbit takes about 365 days.
Tip 2: It is far faster than a rifle bullet but only a tiny fraction of the speed of light.
SourceWhat percentage of Earth's crust by volume is composed of metamorphic rocks?
27.4%
Tip 1: The other main types are igneous and sedimentary rock.
Tip 2: Igneous rocks make up about 65% of the crust, and metamorphic rocks make up a bit more than a quarter.
SourceIn what year was the Diamond Sutra, the first completely surviving printed book, produced?
868
Tip 1: It was found at Dunhuang and is now in the British Library.
Tip 2: It was printed during the Tang dynasty, in the 9th century.
SourceWhat is the maximum weight in kilograms of the largest seed in the world, that of the coco de mer?
25 kg
Tip 1: The coco de mer is also called the double coconut palm.
Tip 2: It weighs more than a bowling ball but less than a person.
SourceWhat is the sum of the exterior angles, in degrees, of a pentagram, a five-pointed star polygon?
720 degrees
Tip 1: For an ordinary simple polygon the exterior angles sum to a single full turn.
Tip 2: A pentagram winds around its centre more than once, so its total exceeds that of simple polygons.
SourceHow many millimetres of precipitation does Beijing receive on average per year?
528 mm
Tip 1: Beijing has a semi-arid, monsoon-influenced climate, so it is much drier than tropical cities.
Tip 2: Close to three-quarters of the total falls in just three summer months, June to August.
SourceBurning coal in a power plant with 40% efficiency, about how many kilograms of coal are needed to power a 100 W lightbulb for one full year?
325 kg
Tip 1: A 100 W bulb running all year uses roughly 876 kWh of electricity.
Tip 2: Coal holds about 6.7 kWh of energy per kilogram, and much of that is lost as heat in the plant.
SourceRoughly what percentage of human DNA is identical to chimpanzee DNA, when comparing single nucleotide polymorphisms?
98.4%
Tip 1: Chimpanzees and bonobos are our closest living relatives.
Tip 2: The figure is in the high nineties, but not quite 99.
SourceHow many chromosomes does a domestic sheep have?
54 chromosomes
Tip 1: Sheep and goats are different species that seldom interbreed, partly because their chromosome counts differ.
Tip 2: Humans have 46 chromosomes; sheep have more than that, but fewer than goats.
SourceAt what age did Ludwig van Beethoven die?
56 years
Tip 1: He died in Vienna in 1827 after months of illness that left him bedridden.
Tip 2: He had been composing since childhood, but he did not reach 60.
SourceIn what year did Babur defeat Ibrahim Lodi at the First Battle of Panipat, the event that conventionally founded the Mughal Empire?
1526
Tip 1: This was in the early 16th century, a few decades after Columbus's first voyage.
Tip 2: It came after 1520 and before 1530.
SourceA 2013 survey of 200 fantasy books found that what percentage of them contained a map?
34%
Tip 1: Maps of invented worlds are a classic feature of the fantasy genre, from Tolkien onwards.
Tip 2: Fewer than half of the books had one, but more than a quarter did.
SourceAt their nearest points, how many kilometres apart are Alaska and Russia?
4 km
Tip 1: The Bering Strait separates the two, and the Diomede Islands sit in the middle of it.
Tip 2: You could cross by a short boat ride; the gap is far smaller than the width of the English Channel.
SourceThe tritium used in some glow-in-the-dark military compasses has a half-life of about how many years?
12 years
Tip 1: Tritium is a radioactive isotope of hydrogen, so the glow fades as it decays.
Tip 2: It is longer than a decade but much shorter than a human lifetime.
SourceAbout how many taste buds does a chicken have?
30 taste buds
Tip 1: Birds generally have very few taste buds compared with mammals.
Tip 2: Humans have thousands of them, and a catfish has over a million; a chicken has only a tiny fraction of the human number.
SourceIn what year did Pieter Bruegel the Elder paint his famous work Children's Games?
1560
Tip 1: Bruegel was a Flemish Renaissance painter known for detailed scenes of peasant life.
Tip 2: It was painted in the mid-16th century, a few years before his death in 1569.
SourceIn 1814-15 Joseph von Fraunhofer mapped dark lines in the spectrum of the Sun. About how many did he discover?
574 lines
Tip 1: These lines were later shown to come from specific chemical elements absorbing light.
Tip 2: It was several hundred, but fewer than a thousand.
SourceWhat percentage of Istanbul's residents live on the European side of the Bosphorus?
64.4%
Tip 1: Istanbul straddles two continents, divided by the Bosphorus strait.
Tip 2: The European side holds roughly two-thirds of the population.
SourceAt what age did James Clerk Maxwell write his first scientific paper, on oval curves?
14 years
Tip 1: It was presented to the Royal Society of Edinburgh by a professor, since the author was considered too young to present it.
Tip 2: He was still at school at the time, in his mid-teens at most.
SourceWhen the Latin alphabet was first derived from the Etruscan alphabet, how many letters did it contain?
21 letters
Tip 1: Letters such as J, U and W were added much later.
Tip 2: It had fewer letters than the modern 26-letter alphabet, but more than 20.
SourceIn what year was the construction of the United Nations Headquarters in New York completed?
1952
Tip 1: Building started in 1948 on land beside the East River.
Tip 2: It was finished in the early 1950s, around the time of the Korean War.
SourceIn what year did Heinrich Hertz first prove the existence of radio waves?
1886
Tip 1: He was a German physicist trying to confirm Maxwell's electromagnetic theory.
Tip 2: It happened in the late 1880s, about a decade before Marconi's first radio communication system.
SourceIn the German election of 6 March 1933, what percentage of the vote did the Nazi Party win?
44%
Tip 1: This was the last multi-party election held before the Nazi dictatorship took hold.
Tip 2: The Nazis won the most seats but still fell short of a majority of the vote.
SourceIn what year did the WHO declare smallpox eradicated worldwide?
1980
Tip 1: It was the first human disease eliminated by deliberate health care interventions.
Tip 2: It happened in the same year as the eruption of Mount St. Helens.
SourceHow many men did Francisco Pizarro lead in the Spanish expedition that conquered the Inca Empire?
168 men
Tip 1: The force also had one cannon and 27 horses.
Tip 2: It was a few hundred men at most, tiny compared with Atahualpa's army of tens of thousands.
SourceAround what year were the first wearable eyeglasses invented in Italy?
1286
Tip 1: This is well before the invention of the microscope and the telescope.
Tip 2: It was in the late 13th century.
SourceIn what year was Jules Verne's novel From the Earth to the Moon published?
1865
Tip 1: It appeared more than a century before humans first landed on the Moon.
Tip 2: It was published in the 1860s, the same year as Alice's Adventures in Wonderland.
SourceIn 2025 scientists confirmed the longest observed lightning flash, over Texas and Kansas in 2017. How many kilometres long was it?
829 km
Tip 1: It ran from eastern Texas to near Kansas City.
Tip 2: It is a little longer than the distance from Stockholm to Berlin.
SourceIn what year was William of Ockham's influential logic work Summa Logicae released?
1323
Tip 1: Ockham was a medieval English Franciscan friar and philosopher, famous for a principle about simplicity.
Tip 2: It was in the first half of the 14th century, a few decades before Chaucer's Canterbury Tales were begun.
SourceIn what year did Temüjin formally adopt the title Genghis Khan at an assembly of the Mongol tribes?
1206
Tip 1: This was the moment the Mongol tribes were united under one ruler, after decades of fighting.
Tip 2: It happened in the early 13th century, a few years after 1200 and well before the Mongols captured Zhongdu.
SourceIn what year was the first Unimate industrial robot installed at a General Motors plant in New Jersey to lift hot metal from a die casting machine?
1961
Tip 1: The robot was invented by George Devol and was the first commercial programmable robot.
Tip 2: It was installed in the early 1960s, around the time Yuri Gagarin became the first human in space.
SourceEnglish is an official or co-official language in how many sovereign states?
57 sovereign states
Tip 1: This makes English the most geographically widespread language in the world.
Tip 2: There are about 195 sovereign states in total, and English is official in roughly a quarter to a third of them.
SourceThe Japanese Ministry of Education's list of kyoiku kanji specifies how many simple characters a child is to learn by the end of sixth grade?
1,006 kanji
Tip 1: Kanji are Chinese-derived characters, and adults are expected to know about twice this many everyday ones.
Tip 2: The number is a little over one thousand.
SourceRoughly how many million heart attacks (myocardial infarctions) occurred worldwide in 2015?
15.9 million
Tip 1: Heart attacks are among the leading causes of death and hospitalisation globally.
Tip 2: It is more than Sweden's population of about 10 million, but less than Australia's 27 million.
SourceThe capybara is the largest living rodent. What is the maximum weight it can reach, in kilograms?
66 kg
Tip 1: It is a semi-aquatic South American rodent, often seen relaxing with other animals.
Tip 2: A big one weighs about as much as a slim adult human.
SourceBetween 1894 and 1915 Krisjanis Barons published six volumes of Latvian folk songs, the Latvju dainas. How many song texts did they contain?
217,996 songs
Tip 1: It is one of the largest folk song collections in the world, kept in a Cabinet of Folksongs in Riga.
Tip 2: The number is in the hundreds of thousands, but fewer than 300,000.
SourceThe Theravada Vinaya, the monastic code of Theravada Buddhism, contains how many rules for bhikkhus (monks)?
227 rules
Tip 1: The East Asian Dharmaguptaka code has a few dozen more rules than this one.
Tip 2: The count is between 200 and 250.
SourceWhat percentage of the contiguous United States does the Mississippi River's drainage basin cover?
40%
Tip 1: The basin stretches from the Rockies to the Appalachians and includes the Missouri and Ohio rivers.
Tip 2: It is more than a third but less than half of the lower 48 states.
SourceThe record hailstone that fell in Vivian, South Dakota in 2010 measured how many centimetres in diameter?
20 cm
Tip 1: It was the largest hailstone by diameter and weight ever recorded in the United States.
Tip 2: It was bigger than a grapefruit but smaller than a basketball.
SourceIn what year did Al-Khwarizmi publish The Compendious Book on Calculation by Completion and Balancing, a founding text of algebra?
825
Tip 1: Al-Khwarizmi worked in Baghdad, and the word algebra comes from the title of this book.
Tip 2: It was in the early 9th century, during the Abbasid Caliphate, long before the printing press.
SourceIn what year was the Human Genome Project launched to map the human genome?
1990
Tip 1: It was an international research effort that took more than a decade to complete.
Tip 2: It was launched in the last decade before the year 2000.
SourceIn what year did Antti Aarne publish the first classification system for folktales?
1910
Tip 1: Aarne was a Finnish folklorist, and his system was later expanded by Stith Thompson.
Tip 2: It was in the first decade of the 20th century or just after it.
SourceApproximately how many million volunteers, members and staff does the International Red Cross and Red Crescent Movement have worldwide?
16 million
Tip 1: It is one of the largest humanitarian networks in the world, with societies in nearly every country.
Tip 2: It is more than Sweden's population, but fewer than 20 million.
SourceAround what year did Jacopo Peri write Dafne, the first work to be called an opera today?
1597
Tip 1: Peri was an Italian composer working in Florence at the end of the Renaissance.
Tip 2: It was in the final years of the 16th century.
SourceWhat magnitude did the 1960 Chilean earthquake, the largest ever measured on a seismograph, reach?
9.5 magnitude
Tip 1: The magnitude scale is logarithmic, so each whole step is about 32 times more energy.
Tip 2: It was above 9 but below 10.
SourceThe frog Paedophryne amauensis from New Guinea is the smallest known vertebrate. How long is it, in millimetres?
7.7 mm
Tip 1: It was formally described by scientists in 2012.
Tip 2: It is less than one centimetre long.
SourceAt what age was Isaac Newton appointed the second Lucasian Professor of Mathematics at Cambridge?
26 years old
Tip 1: He succeeded Isaac Barrow in 1669, just one year after receiving his MA.
Tip 2: He was in his mid-twenties, young for such a post.
SourceIn 2011, bicycle sales in Italy surpassed new car sales. How many million bicycles were sold in Italy that year?
1.75 million
Tip 1: This happened during the European financial crisis, when Italians bought fewer cars.
Tip 2: It was more than 1 million but fewer than 2 million.
SourceWhat is the area of the city of Bangkok, in square kilometres?
1,568.7 km²
Tip 1: The city sits in the Chao Phraya River delta, and its metropolitan region is much bigger.
Tip 2: It is roughly the size of Greater London, more than 1,000 but fewer than 2,000.
SourceWhat is the combined length of China's land borders with its neighbouring countries, in kilometres?
22,117 km
Tip 1: China shares borders with more countries than almost any other nation.
Tip 2: Its land border is among the very longest of any country, well above 20,000 km.
SourceWhat percentage of the Earth's crust by weight is made up of oxygen?
47%
Tip 1: Oxygen is the single most abundant element in the crust, mostly locked up in silicate minerals.
Tip 2: It is more than a third but less than half of the crust's weight.
SourceHow tall is Olympus Mons on Mars, the highest known mountain in the Solar System, in metres?
21,171 metres
Tip 1: It is a shield volcano on Mars and dwarfs anything on Earth.
Tip 2: It is roughly two and a half times the height of Mount Everest.
SourceRoughly how many self-portraits did the Dutch painter Rembrandt create in paintings, etchings and drawings combined?
100 self-portraits
Tip 1: He portrayed himself so often that the works form an intimate autobiography.
Tip 2: More than 40 of them are paintings.
SourceRoughly how many billion years old is the Earth?
4.5 billion years
Tip 1: Radiometric dating of rocks and meteorites has pinned the age down fairly precisely.
Tip 2: It is between 4 and 5 billion years, and about a third of the age of the universe.
SourceInto how many autonomous (sui iuris) churches is the Catholic Church organized, counting the Latin Church and the Eastern Catholic Churches?
24 churches
Tip 1: One large Western church sits alongside a number of smaller Eastern churches.
Tip 2: The count is more than 20 but fewer than 30.
SourceAt its peak around 117 AD under Emperor Trajan, roughly how many million square kilometres did the Roman Empire cover?
5 million km²
Tip 1: At its height the empire ringed the Mediterranean Sea.
Tip 2: The area is smaller than that of modern Brazil's 8.5 million km² but bigger than Western Europe's.
SourceHow many million years ago did the last mass extinction, which wiped out the non-avian dinosaurs, occur?
66 million years
Tip 1: A large meteorite impact is thought to have triggered it.
Tip 2: It is well after the breakup of Pangaea but long before humans appeared; think of a number in the tens of millions.
SourceIn what year were both the Avignon Festival and the Edinburgh Festival Fringe established?
1947
Tip 1: Both were founded in the years right after the Second World War.
Tip 2: It was in the late 1940s.
SourceIn what year was the Union Jack adopted as the national flag of the United Kingdom?
1801
Tip 1: This followed the political union of Great Britain with Ireland.
Tip 2: It happened in the first years of the 19th century.
SourceIn what year did Albert Einstein propose and publish his general theory of relativity?
1915
Tip 1: It came about a decade after his special relativity paper.
Tip 2: It was in the middle of the First World War.
SourceHow high is Pico da Neblina, the highest point in Brazil, in metres?
2,994 metres
Tip 1: It lies near the border with Venezuela in the Amazon region.
Tip 2: It is well below 3,500 metres, and far lower than many peaks in the Andes.
SourceIn the Gregorian calendar's 400-year cycle, how many years are leap years?
97 years
Tip 1: Century years are leap years only if divisible by 400.
Tip 2: It is slightly fewer than one year in four, so a bit under 100.
SourceIn what year did Isaac Newton first publish his three laws of motion in the Principia Mathematica?
1687
Tip 1: It was in the late 17th century.
Tip 2: It came just before the Glorious Revolution in England.
SourceHow many machine tools were used in the production of the Ford Model T?
32,000 machine tools
Tip 1: Ford pioneered mass production using special-purpose machines.
Tip 2: The figure is in the tens of thousands.
SourceHow many watts are there in one official horsepower?
746 watts
Tip 1: James Watt's horse-based unit is still used for engines and cars.
Tip 2: It is a bit more than three-quarters of a kilowatt.
SourceDesigned in 1981, the IPv4 internet addressing system can address up to roughly how many billion hosts?
4.3 billion
Tip 1: It uses 32-bit addresses, and the world has long since run short of them.
Tip 2: It is fewer than the number of people alive today, but more than 4 billion.
SourceContinental lithosphere, the rigid outer shell of Earth under the continents, is typically about how many kilometres thick?
200 km
Tip 1: Oceanic lithosphere is thinner than continental lithosphere.
Tip 2: Oceanic lithosphere averages around 100 km thick, and the continental kind is thicker than that.
SourceRoughly how many species of plants are carnivorous, like the Venus flytrap and sundews?
630 species
Tip 1: Carnivorous plants are a tiny fraction of all plant species.
Tip 2: There are several hundred of them, but fewer than a thousand.
SourceIn what year was the French philosopher René Descartes born?
1596
Tip 1: He was born in the late 16th century.
Tip 2: He died in 1650, in his early fifties.
SourceCurrently, about how many days does it take from the March equinox to the June solstice (to two decimals)?
92.75 days
Tip 1: It is a bit more than three months.
Tip 2: It is the second longest of the four equinox and solstice intervals, but longer than 90 days.
SourceIn what year was Leo Tolstoy's novel War and Peace published?
1869
Tip 1: It appeared in the second half of the 19th century.
Tip 2: It came out less than a decade after Russia freed its serfs in 1861.
SourceThe highest point in the city of Moscow is Teplostan Upland. How many metres above sea level is it?
255 metres
Tip 1: Moscow sits on a fairly flat plain.
Tip 2: The main weather station in Moscow is at 156 metres, and the highest point is not far above it.
SourceThe Dead Sea is the lowest lake in the world. How many metres below sea level is its shore?
418 metres
Tip 1: It lies between Jordan, Israel and Palestine.
Tip 2: It is the lowest land surface on Earth, a few hundred metres below sea level.
SourceTheodore Maiman's first working laser used a ruby crystal to make red light. What was its wavelength in nanometres?
694 nm
Tip 1: Red visible light lies roughly between 620 and 750 nm.
Tip 2: It was deep red, toward the longer end of the visible range.
SourceA study of conflicts in 13 countries from 1955 to 2002 found what percentage of violent war deaths were male?
81%
Tip 1: The large majority of these deaths were male.
Tip 2: It was more than four in five, but not nine in ten.
SourceSouth Asia has a total area of how many million square kilometres?
5.2 million km²
Tip 1: It is one of the most densely populated regions on Earth, but not very large.
Tip 2: It is roughly half the area of Canada and about a tenth of Asia.
SourceWhen the Persians invaded Greece in 480 BC, how many Greek city-states formed a coalition to resist them?
31 city-states
Tip 1: Athens and Sparta were both members of the coalition.
Tip 2: Only a small minority of the many hundreds of Greek city-states joined.
SourceIn what year did Norway make surnames compulsory?
1923
Tip 1: It was one of the last countries in Scandinavia to require them.
Tip 2: It happened in the 20th century, between the two world wars.
SourceCooking with polluting fuels and technologies causes how many million premature deaths each year?
3.8 million
Tip 1: Household air pollution is a major killer worldwide.
Tip 2: It is more than the annual deaths from malaria, but fewer than 5 million.
SourceA battery electric vehicle contains around how many kilograms of copper and copper alloys?
91 kg
Tip 1: A petrol or diesel car contains much less copper.
Tip 2: An internal combustion car had about 24.5 kg in 2023, and an electric one has several times that.
SourceIn what year did Adrien-Marie Legendre first describe the method of least squares?
1805
Tip 1: It was in the early 19th century.
Tip 2: It was the year of the Battle of Trafalgar.
SourceThe oldest known fossilized skin, possibly from an ancient reptile, is about how many million years old?
289 million years
Tip 1: It dates from before the dinosaurs.
Tip 2: It is from the Permian period, a bit before 300 million years ago.
SourceThe roundworm C. elegans has exactly how many neurons in a hermaphrodite?
302 neurons
Tip 1: Its whole nervous system has been mapped.
Tip 2: Males have 383, more than hermaphrodites, but both are in the hundreds.
SourceIn 2019, about how many million people worldwide were affected by major depression?
264 million people
Tip 1: It is the most common of the mental disorders listed globally.
Tip 2: It is several times as many as those with dementia (about 50 million).
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