1.

Show that square of any positive integer is of the form 9m Or 9m+1.

Answer» You can take the no 3Then all no can be represented in the form 3q,3q+1,3q+2.Then you show by sqaring all of them one by one.For eg- (3q^2)=9q^2 or 9q(q) Where q is any integers


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