Question

This:
By subtraction of successive odd numbers find whether
are perfect squares or not?
(i) 55 (ii) 90 (iii) 121
the square roots of any square numbers by the above
r numbers such as 625,729.......... it is time taking pro​

Answer 1

Answer:

1:55 is not a perfect square

2:90 is also not a perfect square

3:121 is a perfect square