Guessing

Trivia, riddles and brain teasers

Trivia questions, classic riddles, math tricks, logic puzzles and picture brain teasers, each with one right answer.

Make your guess first. Then you get the answer with a short explanation of why it's right, plus how many other people got it.

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435 questions, page 7 of 8

  1. What is 15% of 80 plus 80% of 15?New
  2. What is the sum of every whole number from 1 to 100?New
  3. 10 people each shake hands with everyone else once. How many handshakes happen?New
  4. What letter comes next: M, V, E, M, J, S, U, …?New
  5. Sculptor is to marble as potter is to…?New
  6. 100 lbs of potatoes are 99% water. After drying a bit, they're 98% water. What do they weigh now?New
  7. If you go due south from Detroit, which country do you reach first?New
  8. Which word has all five vowels in alphabetical order?New
  9. How many time zones does Russia span?New
  10. Is it legal for a man to marry his widow's sister?New
  11. A doctor gives you 3 pills and says take one every 30 minutes. How long until they're gone?New
  12. Which number doesn't belong: 3, 5, 7, 9, 11, 13New
  13. What comes next: 8, 5, 4, 9, 1, 7, 6, …?New
  14. Which number doesn't fit: 2, 3, 6, 7, 8, 14, 15, 30New
  15. A cube is painted red, then cut into 27 equal smaller cubes. How many small cubes have no paint at all?New
  16. A bag holds 4 red and 6 blue marbles. You draw 2 without looking. What's the chance both are red?New
  17. If it rains, the ground gets wet. The ground is completely dry. Did it rain?New
  18. On a standard die, opposite faces always add up to what?New
  19. A man pushes his car up to a hotel and tells the owner he's bankrupt. Why?New
  20. Which planet has the most moons?New
  21. What comes next: 1, 8, 27, 64, …?New
  22. You're outside a closed room with 3 switches; one controls the bulb inside. You can enter once. Can you tell which switch it is?New
  23. A man asks a bartender for water. The bartender pulls out a gun and points it at him. The man says thanks and leaves. Why?New
  24. Which 7-letter word gets longer when you remove its third letter?New
  25. What comes next: 1, 2, 6, 24, 120, …?New
  26. You walk into a dark cabin with one match. There's a candle, an oil lamp, and a wood stove. What do you light first?New
  27. Is 0.999… (repeating forever) exactly equal to 1?New
  28. A rope fits tight around Earth's equator. Add 1 meter and lift it evenly. How big is the gap?New
  29. You have 3 apples and 4 oranges in one hand, and 4 apples and 3 oranges in the other. What do you have?New
  30. How long is 1 million seconds?New
  31. Which is older: Oxford University or the Aztec Empire?New
  32. Which English word has three double letters in a row?New
  33. Cards show A, K, 4, 7. Rule: "If a card has a vowel on one side, it has an even number on the other." Which 2 cards must you flip to test it?New
  34. What word contains 26 letters but only three syllables?New
  35. What letter comes next: O, T, T, F, F, S, S, …?New
  36. Knights tell the truth; knaves lie. A says "B is a knave." B says "A and I are the same type." What are they?New
  37. Three boxes are labeled Apples, Oranges, and Mixed — every label is wrong. You may pull one fruit from one box. Which box?New
  38. A snail climbs 3 ft up a 10 ft well each day and slides back 2 ft each night. On which day does it get out?New
  39. What is the only number whose English name is spelled with its letters in alphabetical order?New
  40. An investment doubles every 7 years. About how long until it's 8 times bigger?New
  41. Cleopatra lived closer in time to which event?New
  42. Two ropes each take exactly 60 minutes to burn, but burn unevenly. Can you use them to time exactly 45 minutes?New
  43. How can you drop a raw egg onto a concrete floor without cracking it?New
  44. How many times do a clock's hour and minute hands overlap in 24 hours?New
  45. What comes next: 1, 3, 7, 15, 31, …?New
  46. Among all two-child families with at least one boy, what fraction have two boys?New
  47. Is the Great Wall of China visible from the Moon with the naked eye?New
  48. Written in capital letters, which word reads the same upside down?New
  49. What comes next: 61, 52, 63, 94, 46, …?New
  50. What actually makes a bull charge at a matador's cape?New
  51. A farmer has 17 sheep. All but 9 run away. How many are left?New
  52. What year was the first iPhone released?New
  53. If A = 1, B = 2, C = 3 and so on, what does the word ATTITUDE add up to?New
  54. Do humans really use only 10% of their brains?New
  55. How many bones are in an adult human body?New
  56. If 3 cats catch 3 mice in 3 minutes, how many cats are needed to catch 100 mice in 100 minutes?New
  57. How many US states border Utah?New
  58. Some months have 31 days. How many months have 28 days?New
  59. Roughly how many times does a human heart beat in a lifetime?New
  60. Botanically, is a tomato a fruit or a vegetable?New

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