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If n + 1 integers are chosen from the set{1, 2, 3,..., 2n},where n is...

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If n + 1 integers are chosen from the set{1, 2, 3,..., 2n},where n is a positive integer, must at least one of them be even?To answer this question, let S = {1, 2, 3,..., 2n}, where n is a positive integer, and note that in S there are exactly _____number of odd integers in T, it is ______ odd integers. Since n + 1 is _____ v for at least one of the elements of T to be even. Thus, the answer to this question is _____

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