Printable Logic & Riddles quiz

The 40 questions

1. How many colours does a standard Rubik’s Cube have?
2. In the dark, how many socks must you take from a drawer of black and white socks to be sure of a pair?
3. Two coins make 30 cents, and one of them is not a 10-cent coin. What are they?
4. A perfect number equals the sum of its divisors. Which is the next one after 6?
5. What is 6 ÷ 2 × 3?
6. What comes next: 3, 4, 7, 11, 18, …?
7. Two trains 300 km apart head for each other at 70 and 80 km/h. When do they meet?
8. Some cats are black, and Felix is a cat. Is Felix black?
9. A price rises by 10%, then falls by 10%. Compared with the start, it is…
10. A car does 60 km at 30 km/h, then 60 km at 60 km/h. What is its average speed?
11. A train covers 150 km between 9:00 and 11:30. What is its average speed?
12. Which letter comes next: A, B, D, G, …?
13. What has cities but no houses, and rivers but no water?
14. At most, how many Sundays can a 31-day month have?
15. Which letter comes next: A, C, F, J, …?
16. What comes next: 1, 8, 27, 64, …?
17. What comes next: 2, 9, 28, 65, …?
18. What can travel around the world while staying in a corner?
19. With two dice, which total comes up most often?
20. Which number is the odd one out: 9, 16, 25, 30, 36?
21. What gets bigger the more you take away from it?
22. After 1, which is the first number that is both a square and a cube?
23. Crossing a river with a wolf, a goat and a cabbage, what do you take across first?
24. Which year is written MMXXVI in Roman numerals?
25. What comes next: 5, 10, 15, 20, …?
26. What comes next: 2, 3, 5, 7, 11, …?
27. How many times a day do the hour and minute hands overlap?
28. One tap fills a bath in 6 minutes, another in 3. How long with both?
29. What comes next: 7, 14, 21, 28, …?
30. Which letter comes next: A, E, I, M, …?
31. What is full of holes but still holds water?
32. Which letter comes next: Z, Y, X, W, …?
33. Which fraction is equal to 0.75?
34. You have 3 apples and you take away 2. How many apples do you have?
35. How many squares of all sizes are there on a chessboard?
36. Tom is taller than Bob, and Bob is taller than Sam. Who is the shortest?
37. Water lilies double every day and cover a lake in 48 days. When do they cover half of it?
38. Knights always tell the truth, knaves always lie. A says: "We are both knaves." What are A and B?
39. What comes next: 81, 27, 9, 3, …?
40. What is 25% of 80?