Question

The number with the second, the fifth and the eighth digits in that order of the number 31549786, is a perfect square of a two-digit number x. The units digit of x is
1. 1
2. 6
3. 4
4. 2

Answer 1

Correct Answer - Option 3 : 4

The Given number is: 31549786.

According to the statement, Second, Fifth and Eighth digits of this number is: 196.

196 is the perfect square of 14.

x = 14

The unit digit of 14 is 4.

Hence, "4" is the correct answer.