Question

How to classify the following as the squares of even or odd natural numbers

841, 144, 900, 169 576 225, 1210000, 729 and 256

Answer 1

Square of even natural is always even for example square of 12 is 144
square of 30 is 900
Square of odd natuaral number is always odd for example sqaure of 841 is 29
square of 13 is 169
therefore classification of given numbers is as follows:
odd square numbers : 841,169,225,729
even square numbers:144,900,576,1210000,256