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5's rule
| Question | Answer |
|---|---|
| 5*2(5 squared) | 25 |
| 15*2(15 squared) | 225 |
| 25*2(25 squared) | 625 |
| 35*2(35 squared) | 1225 |
| 45*2(45 squared) | 2025 |
| 55*2(55 squared) | 3025 |
| 65*2(65 squared) | 4225 |
| 75*2(75 squared) | 5625 |
| 85*2(85 squared) | 7225 |
| 95*2(95 squared) | 9025 |
| 105*2(105 squared) | 11,025 |