Question

What least number must be added to $526$ to make it a perfect square?
(a) $3$
(b) $2$
(c) $1$
(d) $6$

Answer 1

Finding the square root of 526 by division method.

We get remainder=41
Now $(22{)}^2=484$
and $(23{)}^2=529$

$484<526<529$

$\therefore$ The least number to be added $=529-526=3$