Question

here are 500 children in a school. For a P.T. drill they have to stand in such a manner that the number of rows is equal to number of columns. How many children would be left out in this arrangement?

Answer 1

2 ) 500 ( 22

4

===========

42) 100

84

============

16

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So, Number of rows = 22 = number of columns

So, Number of students in arrangement =- 22*22=484

No. of children would be left out in this arrangement = 500-484= 16

Hence 16 children would be left out in this arrangement