Question

(i) If the number at the units place is 2 or 8, what will be the units place of the square of that number?
(ii) What is the square of 12 and find its units place?

Answer 1

(i) If the number at the units place is 2 or 8, the units place of the square of that number will be 4.
Consider the number 18.
${18}^2=324$
The number at the unit's place is 4.

(ii) ${12}^2=144$
The number at the unit's place is 4.