Question

there are 500 children in a school. for a PT 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







500=22²+16

so Number of rows=22

columns=22.


number of students left =16..

Answer 2

Answer:

16

Step-by-step explanation:

Let the number of rows be x

We are given that  the number of rows is equal to number of columns

So, $x \times x = 500$

$x^2=500\\x=\sqrt{500}\\x=22.36$

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