Question

Is 1057 a perfect square ? give reason​

Answer 1

Answer:

Since, perfect square numbers contain their unit's place digit 1, 4, 5, 6, 9 and even numbers of 0. Therefore 1057 is not a perfect square because its unit's place digit is 7. (ii) Since, perfect square numbers contain their unit's place digit 0, 1, 4, 5, 6, 9 and even number of 0.