Question

1) Which number is Not a perfect square?
a) 64 b) 169 c) 288 d) 400
2) The digit in the unit place of the cube of 47 is
a) 9 b) 7 c) 3 d) 1

Answer 1

Answer:

1. c) 288 is not a perfect square as the digit at the one's place of a perfect square can never be 2,3,7,8

2. a) 9, One's place of 7×7 = 49 is 9