Question

seetha says 7572,357,5050 are perfect squares.is she right? give your reason.

Answer 1

no as the number whose unit digit are ending with 2, 3,7 or 8 can not be perfect square............and number 5050 is not a perfect square because their should be  zeroes in ones and tens place and should be in even number  like in 100 , 10000 are perfect numbers but not 10 or 1000