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
(b) Show that if n is composite, then n does not divide for some i, 1 ≤i ＜n.
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for some i, 1 ≤i ＜n.