Prove 7 n 3 n is divisible by 4 July 8, 2019 16 32 64 128 Prove 7 n 4 n 3 n is divisible by 12 Using mathematical induction prove that 7 n 3 n is divisible by 4 Using principle of mathematical induction prove that 7 n 3 n is divisible by 4 Numbers divisible by 3 6 and 9 Number divisible tricks