Use Euclid’s division lemma to show that the cube of any positive integer is of the form 9m, 9m +1 or 9m +8.
Ans. let a be any positive integer and b =3
a = 3q +r, where q ≥ 0 and 0 ≤ r
Ans. let a be any positive integer and b =3
a = 3q +r, where q ≥ 0 and 0 ≤ r