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प्रश्न
Find the cube root of the following number by the prime factorisation method.
175616
उत्तर
| 2 | 175616 |
| 2 | 87808 |
| 2 | 43904 |
| 2 | 21952 |
| 2 | 10976 |
| 2 | 5488 |
| 2 | 2744 |
| 2 | 1372 |
| 2 | 686 |
| 7 | 343 |
| 7 | 49 |
| 7 | 7 |
| 1 |
Prime factorisation of 175616 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 7 × 7
= 23 × 23 × 23 × 73
= (2 × 2 × 2 × 7)3
∴ `root3 (175616)`
= 2 × 2 × 2 × 7
= 56
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