NIELIT 2019 Feb Scientist C - Section C: 22

Question

A general wishing to draw his $17429$ men in the form of a solid square found that he had $5$ men over. The number of men in the front row was:

• A. $174$
• B. $424$
• C. $132$
• D. $742$

Answer 1

17429- 5 = 17424  [he had 5 men over]

Now take square root of 17424 i.e., 132

 

Option C

Answer 2

$\textrm{according to the question it structures look like $n*n$ square.}$

$\textrm{there are $n^{th}$ row and each row is dividing into $n^{th}$ coloum.}$

$\textrm{now it’s given that $5$ men's are extra here.}$

$\implies$ $n*n=17429-5$

$\implies$ $n^2=17424$

$\implies$ $n=132$

$\textrm{so the number of men in front row is 132.}$