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11-11-2016
Mathematics

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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
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nobillionaireNobley nobillionaireNobley

18-11-2016

1 * 2 = 2 but 2 is not a composite number but a prime number.
Therefore, 1 * 2 = 2 is a counter example to the given conjecture.

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