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What operation is the set of positive rational numbers not closed?

Anonymous

∙ 16y ago

Updated: 9/15/2023

subtraction. Let's take 1/2 and subtract 3/4 which is great than 1/2 so the answer is negative and hence not a positive rational.

Wiki User

∙ 16y ago

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Q: What operation is the set of positive rational numbers not closed?

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Why is division not closed for rational numbers give an example?

If a set is closed under an operation. then the answer will be a part of that set. If you add, subtract or multiply any two rational numbers you get another national number. But when it comes to division, it is closed except for one number and that is ZERO. eg 3.56 (rational number) ÷ 0 = no answer. Since no answer is not a rational number, that rational numbers are not closed under the operation of division.

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.

Which set is closed under the operation of subtraction?

The set of integers, rational numbers, real numbers, complex numbers are some of the sets. Also, many of their subsets: for example, all numbers divisible by 3.

Is it true that The difference of two rational numbers always a rational number?

Yes. The rational numbers are a closed set with respect to subtraction.

Are the set of rational numbers closed under addition?

Yes, the set is closed.

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