Question

If a number has 1 or 9 in the unit's place, then its square ends in___​

Answer 1

Answer:

if the last digit of a number is 1 or 9, its square ends in 1; if the last digit of a number is 2 or 8, its square ends in 4; if the last digit of a number is 3 or 7, its square ends in 9; if the last digit of a number is 4 or 6, its square ends in 6; and.

Answer 2

If a number has 1 or 9 in the unit's place, then its square ends in 1 (last digit 1)