The counterexample is a good way of disproving assertions. (Examples can never be used as proof.) Find
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The counterexample is a good way of disproving assertions. (Examples can never be used as proof.) Find counterexamples for the following assertions:
(a) 2n – 1 is a prime for every n ≥ 2
(b) 2n + 3n is a prime for all n ∈ N
(c) 2n + n is prime for every positive odd integer n
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a b c 21 ...View the full answer
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