Question

By repeated subtraction of odd numbers starting from 1, find whether the following number are perfect or not? If the number is a perfect square, then find its square root. 196​

Answer 1

Step-by-step explanation:

and we have obtained 0 after subtracting 6 successive odd numbers. ∴ 36 is a perfect square. ∴ 49 is a perfect square. ∴ 90 is not a perfect square.