Question

Find the smallest positive integer with which one has to multiply $847$ to get a perfect square.

Answer 1

The given number is $847$

But, $847=11\times 11\times 7={11}^2\times 7$
Here, $7$ occur only once. So, to get a perfect square number we need to have one more $7$.

Thus, to get perfect square we have to multiply the given number $847$ by $7$.