Question

Which of the following will have 4 at the unit place?

• A. ${14}^2$
• B. ${23}^2$
• C. ${62}^2$
• D. ${35}^2$

Answer 1

The correct option is C ${62}^2$

If an natural number has 2 or 8 in its unit place, then the square of such numbers contain 4 in its unit place.

Hence, ${62}^2$ will have 4 at the unit place.
${62}^2=3844$