Question

The square of which of the following would be an even number?

• A. 49
• B. 47
• C. 46
• D. 41

Answer 1

The correct option is C

46

If in a number unit place digit is an even number, then according to the product of unit digit number we get an even number in the square of that number.

Example: ${46}^2$ = 46$\times$ 46, we have 6 at unit's place and 6 $\times$ 6 = 36.

Which gives us an even number 6 at units place of a square. So, 46 is the right answer.