Need help with this again; I really need to go through congruences again. Let n be a composite integer > 4. Prove (n-1)! is congruent to 0mod n
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Originally Posted by htata123 Need help with this again; I really need to go through congruences again. Let n be a composite integer > 4. Prove (n-1)! is congruent to 0mod n See this.
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