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प्रश्न
Using prime factorisation, find which of the following are perfect squares.
484
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उत्तर
Prime factors of 484 = (2 × 2) × (11 × 11)
As grouping, there is no unpaired factor left over.
| 2 | 484 |
| 2 | 242 |
| 11 | 121 |
| 11 | 11 |
| 1 |
So, 484 is a perfect square.
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