Brainteasers10 randomly selected Brainteasers questions for quizmasters. New random selection made weekly. Next update: Monday 17th August 2026 (Please note: Questions are taken from our database of previous quizzes. Some questions and answers may be outdated.) |
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| 1. | What is the missing number? |
| 2. | In a doctors' surgery the first 15 patients were only in the consulting room for an average of three minutes each. After a further 30 people had seen their doctor, the average number of minutes spent in the consulting room increased to nine minutes per patient. What was the average amount of time each of the last 30 patients spent in the consulting room? |
| 3. | Three volumes of Lord of the Rings sit in order on a shelf. Each is 30 mm thick, with 26 mm of pages and 2 mm for each cover. A bookworm munches from page 1 of the first volume through to the last page of the third volume. How far does it travel? |
| 4. | What is the 4-digit number in which the first digit is one-fifth the last, and the second and third digits are the last digit multiplied by 3? (Hint: The sum of all digits is 12.) |
| 5. | In a supermarket, the first 25 customers of the day purchased an average of two items each. After a further 15 customers, the average number of items purchased by each customer rose to eight. What was the average number of items purchased by the last 15 customers only? |
| 6. | A clock currently shows 3:35. If rotated 90 degrees counter-clockwise, what time will it show? |
| 7. | What comes next in this sequence? 16, 8, 11, 14, 9, 12, 5, __? |
| 8. | Solve this puzzle to reveal the two missing numbers. |
| 9. | A helicopter covers its outward journey at 330 km/h. It returns over exactly the same distance at 220 km/h. What is the helicopter's average speed over the entire journey? |
| 10. | Find words to fit the clues. Each group of crosses are replaced with the same three-letter word. What three-letter word replaces XXX? a. _ _ X X X (Expression of indifference) b. _ X X X _ _ (Economical) c. _ X X X _ _ _ (A South American country) |
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