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Earn +20 ptsQ: Is a rational number closed under addition?
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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.
Are rational numbers closed under addition?
Yes.
Why does a rational number plus a rational number or a rational number multiplied by a rational number equal to rational number?
The way in which the binary functions, addition and multiplication, are defined on the set of rational numbers ensures that the set is closed under these two operations.
Are the set of rational numbers closed under addition?
Yes, the set is closed.
Is the set of rational numbers closed under addition?
Yes, it is.
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