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Question

Find the least number that must be subtracted so that the resulting number is a perfect square.
1886

A
27
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B
47
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C
37
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D
85
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Solution

The correct option is D 37
Taking the root of the given number 1886, we find that 37 has been left as shown below:



Hence, 37 is the least number that must be subtracted so that the resulting number is a perfect square.

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