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13y ago

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Related Questions

Are prime numbers closed under subtration?

No.


Are sets of fractions closed under addition?

Yes.


Are fractions closed under divion by nonzero elements?

Yes.


Why are fractions closed under addition?

For a set to be closed under any operation, the result of the operation must also be a member of the set. The result of adding fractions is another fraction, thus it is closed under addition. Remember that 8/3, 8/4, 4/4, 2/1 are all fractions - they have a numerator and denominator separated by a line (at an oblique angle on the computer screen). Improper fractions are still fractions.


Is subtration commutative?

No.


What are synonyms of subtration?

defference


Are the sets of positive fractions closed for addition?

Yes.


Are integers closed under division?

No. Integers are not closed under division because they consist of negative and positive whole numbers. NO FRACTIONS!No.For a set to be closed under an operation, the result of the operation on any members of the set must be a member of the set.When the integer one (1) is divided by the integer four (4) the result is not an integer (1/4 = 0.25) and so not member of the set; thus integers are not closed under division.


Are the set of positive fractions closed under division?

Yes, because for any x and y that are positive fractions (y not equal to zero), x/y is also a positive fraction. Note that whole numbers are considered fractions with denominators of 1 -- otherwise it doesn't work.


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.


What is closed and not-closed under addition?

The set of even numbers is closed under addition, the set of odd numbers is not.


Is prouduct mean times multiplacation addition subtration?

The product is the answer to a multiplicationproblem.