What is wrong with this proof? Theorem. 7 is divisible by 3 Proof. Every integer number is divisible by 3 or it is not. Let c be an arbitrary integer number. Therefore, it is divisible by 3 or it is not. Suppose it is divisible by 3. By the rule of universal generalization, if an arbitrary number is divisible by 3, every number is is divisible by 3. Therefore, 7 is divisible by 3.

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