If the number has 1 or 9 at its unit place, then its square will always have ___ in its unit place.
9
1
3
Both 1 and 9 are possible
If a number has 2 or 8 in the unit place, then its square ends in
If a number has zeroes at its unit and tens places then square of the number will have 3 zeroes at its end. State whether true or false.