Here,
- We do prime factorization of the number
- If the prime factorization forms pairs, then it is a perfect square
- If it doesn’t, then it isn't a perfect square
Let’s take some examples
Is 32 a perfect square?
Here, we do not get perfect square as one 2 is left alone.
So, 32 is not a perfect square
Is 120 a perfect square?
Here, 2, 3, 5 are not in pairs
So, 120 is not a perfect square
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