Find the greatest number of 5 digit which is a perfect square.Explain.
Greatest 5 digit number = 99999
31539¯¯¯¯¯¯99¯¯¯¯¯¯9939610¯¯¯¯¯¯991061625 38¯¯¯¯¯¯99 53125630774
Remainder = 774
Largest 5 digit perfect square = 99999 - 774
= 99225