Question

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


​

Answer 1

Answer:

The unit digit of a perfect square can be only 0, 1, 4, 5, 6 or 9. The square of a number having: 1 or 9 at the units place ends in1. 2 or 8 at the units place ends in 4. 3 or 7 at the units place ends in 9.