Question : The least number that should be subtracted from 63520 to make the result a perfect square is:
Option 1: 30
Option 2: 24
Option 3: 14
Option 4: 16
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Correct Answer: 16
Solution :
Check whether 63520 is a perfect square using the division method:
Remainder = 16
Hence, 63520 is not a perfect square.
⇒ 63520 – 16 = 63504 is a perfect square.
So, the least number that should be subtracted is 16.
Hence, the correct answer is 16.
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