Brainteasers10 randomly selected Brainteasers questions for quizmasters. New random selection made weekly. Next update: Monday 25th May 2026 (Please note: Questions are taken from our database of previous quizzes. Some questions and answers may be outdated.) |
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| 1. | 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? |
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12 ((((30+15)×9)-(15×3))÷30) | |
| 2. | On each row, place a three letter word that can be attached to the end of the word to the left, and to the beginning of the word to the right, to give a longer word in each case. When completed, the initial letters of the three letter words will give another word reading downwards. What is it? SEE _ _ _DUST AM _ _ _ LESS WING _ _ _ POWER PLUM _ _ _ HOD WEEK _ _ _ OWED OVER _ _ _ AROUND |
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SUMMER (SAW, USE, MAN, MET, END, RUN) | |
| 3. | Three Khon Kaen expats are on a charity walk to Udon Thani province. On the first day they travel one fifth of the total distance. The next day they cover one third of what is left. The following day they cover one quarter of the remainder. On the fourth day they cover half of the remaining distance. The three expats have 25 km left. How many kilometres have they travelled up to now? |
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100 (25÷1×2=50 50÷3×4=66⅔ 66⅔÷2×3=100 100÷4×5=125 125−25=100) | |
| 4. | 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? |
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34 mm | |
| 5. | What letter completes this sequence? B F J P _ |
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V (They are the letters that follow the vowels in the alphabet.) | |
| 6. | Bus timetable: What time does the bus to Songkhla depart? Krabi - 11:18 Lampang - 12:01 Phuket - 16:08 Rayong - 18:01 Songkhla - |
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19:15 (The alphabetical value of the first letter gives the hour and the alphabetical value of the second letter gives the minutes.) | |
| 7. | Four different villages lie along a straight highway. The third village is 60km away from the first village; the fourth is 40 km away from the second; the third is 10 km nearer to the fourth than it is to the second. What is the distance between the first and fourth villages? |
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75 km | |
| 8. | Each letter is related to its preceding digits. What number and letter continues this sequence? 12 T 17 E 22 F 27 N ? ? |
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32 F (The numbers increase by five. The letters are the first letter of the number found by adding the two digits together.) | |
| 9. | Which of the four images in the bottom row of drawings best completes the series in the top row? |
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A | |
| 10. | John, Allan, James and Scott went on a shopping trip. John bought five times as many items as Allan bought. Scott bought 6 more than Allan and James bought 5 less than Scott. James bought 3 items. How many did John buy? |
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10 (Allan 2 and Scott 8) | |
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