Question

The following numbers are not perfect square. Give Reason.

1. 1057
2. 7928
3. 222222

Answer 1

The square of numbers may end with any one of the digits 0, 1, 5, 6, or 9. Also, a perfect square has even number of zeroes at the end of it.

(i) 1057 has its unit place digit as 7. Therefore, it cannot be a perfect square.

(ii) 7928 has its unit place digit as 8. Therefore, it cannot be a perfect square.  

(3) 222222 has its unit place digit as 2. Therefore, it cannot be a perfect square.

Answer 2

hey mate
here is your answer

firstly, a perfect square never ends with numbers 2, 3 , 7, and 8
so,

i) 1057 , not a square
ii)7928, not a square
iii)222222, not a square

hope it helps.....☺