Question

Numbers of digits in the square root of 62478078 is :

• A. 4
• B. 5
• C. 6
• D. 3

Answer 1

The correct option is A 4

Let 'n' be no. of digits in a number.

case.i. If n is even

Then no of digits in its square root $=\frac{n}{2}$

case ii If n is odd

Then no. of digits in its square root $=\frac{n+1}{2}$

Given number $=62478078$

Here $=n=8$ (even)

$\therefore$ No of digits in its square root $=\frac{n}{2}=\frac{8}{2}=4$