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Question

Find the least number that must be subtracted from 23497 so that the resulting number is a perfect square.

A
84
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B
48
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C
88
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D
15
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Solution

The correct option is C 88
Taking the root of the given number 23497, we find that 88 has been left as shown below:



Hence, 88 is the least number that must be subtracted so that the resulting number is a perfect square.

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