Question

find the largest number of three digit which is a perfect square

Answer 1

961 which is a square root of 31

Answer 2

I

Here we can see that 999 is not a perfect square as it leaves 38 as remainder. So if 38 will be addede to 999 then it will become a 4 digit number. Therefore to find the largest 3 digit perfect square we will subtract 38 from 999. Hence 961 isthe largest 3 digit perfect square whose square root is 31.