Using Euclid division Show that the square of any positive integers is either of the form 3m or 3m

Using Euclid division Show that the square of any positive integers is

1.	Using Euclid division Show that the square of any positive integers is either of the form 3m or 3m
Answer» Let \'a\'as any positive integer.So,b=3,r=0,1,2a=bq+r,now,R=0,. a=3 put all the values and you can solve it easily