Question

By just observing the digits at ones place, tell which of
can be perfect quares?
1026 1022 1024 1027​

Answer 1

Answer:

(i) 1026 has 6 as the units digit, so it is possibly a perfect square. (ii) 1028 has 8 as the units digit, so it cannot be a perfect square. (iii) 1024 has 4 as the units digit, so it is possibly a perfect square

Answer 2

Answer:

1. 1026 is not a perfect square
2. 1022 is not a perfect square
3. 1024 is a perfect square
4. 1027 is a perfect square