Question

There are 500 childrens in school for a p t drill they have to stand in such a manner that the numbers of rows is equal to bus of columns how many children's would be left out in this arrangement

Answer 1

Square root of 500=22.36

22.6 it is not a perfect square

So nearest perfect square is 22

22x22=484

Children's left out in this arrangement=500-484=16

Answer 2

square root of 500 is 22.36

but 22.36 is not perfect square.

so the nearest perfect square is 22.

22² = 484

therefore, children left out = 500-484

= 16

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