Answer - Week 22
08-Jun-10
What number should replace the question mark?
| 7 | 2 | 5 | 1 | 8 |
| 4 | 1 | 3 | 2 | 6 |
| 9 | 5 | 4 | 0 | 9 |
| 6 | 3 | 3 | 1 | 7 |
| 5 | 4 | 1 | 3 | ? |
Answer: Eight.
On each row the first number minus the second number gives the third number. The first number plus the fourth number gives the fifth number.
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- Author:
- Puzzle Editor
- Publisher:
- British Mensa
- Date:
- 08-Jun-10
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