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Earn +20 ptsQ: Is the set of rational numbers closed under addtion?
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Are rational numbers closed under division multiplication addition or subtraction?
Rational numbers are closed under addition, subtraction, multiplication. They are not closed under division, since you can't divide by zero. However, rational numbers excluding the zero are closed under division.
Is a rational number closed under addition?
No. A number cannot be closed under addition: only a set can be closed. The set of rational numbers is closed under addition.
Are rational numbers closed under addition?
Yes.
Are the rational numbers closed under multiplication?
Yes.
Are the set of rational numbers closed under addition?
Yes, the set is closed.
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