Question

7. By which smallest number 90 must be multiplied so as to make it a perfect square?
(c) 32
(d) 23
(a) 10
(b) 2
(c) 5
(d) 3​

Answer 1

Heya, The smallest to be multiplied . with 90 so as to obtain a perfect square is 10.square root of 900 is 30.

answer is 10