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Earn +20 ptsQ: Is the set of negative integers a group under addition?
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Is the set of positive integers a commutative group under the operation of addition?
No. It is not a group.
What is the rule of addition of integers?
negetive integers are not closed under addition but positive integers are.
What is the set of whole numbers closed by?
If you mean the set of non-negative integers ("whole numbers" is a bit ambiguous in this sense), it is closed under addition and multiplication. If you mean "integers", the set is closed under addition, subtraction, multiplication.
Are integers closed under addition?
yes
Are negative integers closed under multiplication?
No.
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