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Which is a counterexample to the conjecture? The product of any two consecutive integers is a composite number.

A. 3 • 4 = 12
B. 30 • 31 = 930
C. 1 • 2 = 2
D. 10 • 11 = 110

User Rizvan
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1 Answer

5 votes
C is the answer, because 2 is prime.