MENSA Cheat Sheet 2026

The 30 highest-yield MENSA facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Which shape comes next in the series: Triangle, Circle, Square, Pentagon, …? → Hexagon
2. Some flowers fade quickly. All roses are flowers. Which conclusion is valid? → Some flowers may fade quickly
3. A piece of paper folded in half twice and then cut once will, when unfolded, show how many identical holes if the cut crosses one folded layer fully? → 4
4. Person A says: 'All parrots are birds and can talk.' Person B counters: 'My parrot cannot talk.' What has Person B identified? → A counterexample disproving the universal claim
5. Study a grid: 5 rows × 4 columns = 20 cells. Cells are numbered left to right, top to bottom. What number is in Row 3, Column 2? → B. 10
6. Three consecutive even numbers sum to 78. What is the smallest? → B. 24
7. Complete: 1, 8, 27, 64, ? → 125
8. Lion is to Pride as Wolf is to ___? → Pack
9. Notice these numbers: 7, 3, 8, 1, 5, 9, 2, 4, 6. What is the sum of the 2nd and 7th numbers? → A. 5
10. Which figure is the odd one out: a circle, an oval, a square, and an ellipse? → Square
11. Find the next number: 100, 96, 88, 76, 60, ? → 40
12. A company's revenue grew from $500,000 to $650,000. What is the percentage increase? → C. 30%
13. Complete the sequence: 1, 4, 9, 16, 25, ___? → 36
14. Premises: If A then B. If B then C. If C then D. A is true. What follows? → D is true
15. A number sequence is presented: 15, 22, 9, 31, 17, 8, 26, 13. What is the position of the largest number? → B. 4th
16. What completes: 11, 22, 33, 44, ? → 55
17. Which sentence is free of redundancy? → They arrived at the station.
18. All mammals are warm-blooded. All dogs are mammals. Therefore, all dogs are ___? → Warm-blooded
19. What is the missing value? 256, 64, 16, 4, [?] → 1
20. Argument: 'You're wrong about climate change — you're not even a scientist.' This is which fallacy? → Ad hominem (attacking the person)
21. Which statement best follows from: 'All squares are rectangles. Some rectangles are not squares.'? → Not all rectangles are squares
22. If it is true that 'No X is Y' and 'All Z is X', which must be true? → B. No Z is Y
23. OCEAN is to WAVE as WIND is to: → C. Gust
24. Find the missing number: 1, 8, 27, 64, 125, ? → C. 216
25. Argument: 'Either you're with us or you're against us.' What fallacy does this commit? → False dilemma (false dichotomy)
26. Ocean is to Continent as Lake is to ___? → Island
27. If 'red sky night' = 43 67 21, 'night falls early' = 21 89 55, what is the code for 'early'? → 55
28. If it is raining, the match is cancelled. The match is cancelled. Is there another possible reason? → Yes — cancellation could have other causes
29. Two standard dice are placed so their touching faces sum to 5. If the left die shows 3 on top, what is on top of the right die? → Cannot be determined
30. What is the next term? Z, Y, X, W, V, ? → B. U