The least number by which 125 must be divided to make it a perfect square is

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Solution

The correct option is A
5

125 = 5 × 5 × 5
Here, prime factor 5 does not have its pair. If we divide 125 by 5, then this number will become a perfect square.

125 ÷ 5 = 25 is a perfect square.

Therefore, 5 is the least number by which 125 must be divided to make it a perfect square.

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