Question

find the smallest number by which 768 must be multiplied to get the perfect square number​

Answer 1

Answer

By prime factorisation of 768, we get

768=2×2×2×2×2×2×2×2×3

Here 2 are in pair, but 3 needs a pair to make 768 a perfect square.

So, 768 needs to be multiplied by 3 to become a perfect square.