There are 7 problems in this test. No calculators are allowed. Write down detailed steps for the solution to each problem. Otherwise, no credits for that problem will be given.
7. Let m and n be two positive integers, m ≤ n. Define
申論題內容
(a) Show that if'n is prime, then n divides for every i, 1 ≤i＜n.
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for every i, 1 ≤i＜n.