Question

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

Answer 1

1024 is a perfect square among the rest of the following numbers because the number ‘1024’ ends with the digit ‘4’ and 4 is the square of 2. The number ‘1024’ is the square of the number ‘32’ .