Question
Find the missing number, if a certain rule is followed either row-wise or column-wise:
| 5 | 64 | 3 |
| 3 | 81 | 6 |
| 6 | 100 | ? |
| 5 | 64 | 3 |
| 3 | 81 | 6 |
| 6 | 100 | ? |
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