Question

If the number at the units place is 2 or 8, what will be the units place of the square of that number?

• A. 8
• B. 4
• C. 6
• D. 2

Answer 1

The correct option is B 4

If the number at the units place is 2 or 8, the units place of the square of that number will be 4.

For example:
Consider the number 12.
${12}^2=144$
The number at the units place is 4.

Consider the number 18.
${18}^2=324$
The number at the units place is 4.