Question: 4. Suppose n is an arbitrary integer. (a) Show that n(n + 1) is divisible by 2. (b) Show that n(n + 1)(n + 2)

4. Suppose n is an arbitrary integer. (a) Show that n(n

4. Suppose n is an arbitrary integer. (a) Show that n(n + 1) is divisible by 2. (b) Show that n(n + 1)(n + 2) is divisible by 3

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