Question
Check, whether 180 is a perfect square or not using prime factorisation.
✓
Answer
By prime factorisation
$\therefore 180= \underline{2\times2}\times\underline{3\times3}\times5$
Here, the prime factor 5 is not in a pair, so 180 is not a perfect square.
| 2 | 180 |
| 2 | 90 |
| 3 | 45 |
| 3 | 15 |
| 5 | 5 |
| 1 |
Here, the prime factor 5 is not in a pair, so 180 is not a perfect square.
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