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content area top Part 1 Is the set of positive integers a group under the operation of addition? Question content area bottom Part 1 Is
content area top Part 1 Is the set of positive integers a group under the operation of addition? Question content area bottom Part 1 Is the set of positive integers a group under the operation of addition? If not, why not? Select all that apply. A. Yes, it is a group. B. No, it is not a group. There is at least one positive integer that does not have an inverse in the set of positive integers under the operation of addition. C. No, it is not a group. There exist positive integers a and b such that aplusbnot equalsbplusa. D. No, it is not a group. There is no identity element in the set of positive integers under the operation of addition. E. No, it is not a group. The set of positive integers is not closed under the operation of addition. F. No, it is not a group. There exist positive integers a, b, and c such that (aplusb)pluscnot equalsaplus(bplusc)
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