**Which Set Is Closed Under Subtraction**. For instance, the set { 1, − 1 } is closed under. 1 − 2 is not a positive integer even though both 1 and 2 are positive integers.

The integers are “closed” under addition, multiplication and subtraction, but not under division ( 9 ÷ 2 = 4½). The set of rational numbers is closed under addition, subtraction, multiplication, and division (division by zero is not defined) because if you complete any of these operations on. To be closed under an operation, when that operation is applied to two member of a set then the result must also be a member of the set.

### −5 Is Not A Whole Number (Whole Numbers Can't Be Negative) So:

Closure (mathematics) a set is closed under an operation if performance of that operation on members of the set always produces a member of that set. The closure property of subtraction tells. Subtracting two whole numbers might not make a whole number.

### Is Subtraction Closed For Rational Numbers?

So the whole number set is not closed under subtraction and option b is correct. The set of integers is closed under addition, subtraction, and multiplication because when i add, subtract, or multiply any integers, the result is always an integer. Closure (mathematics) in mathematics, a subset of a given set is closed under an operation of the larger set if performing that operation on members of the subset always produces a.

### For Example, The Positive Integers Are Closed Under Addition, But Not Under Subtraction:

To be closed under an operation, when that operation is applied to two member of a set then the result must also be a member of the set. For example, the closure under subtraction of the set of natural numbers, viewed as a subset of the real. Thus, a set either has or lacks closure concerning.

### In Mathematics A Set Is Closed Under An Operation If Performing That Operation On Members Of The Set Always Produces A Member Of.

What set of numbers are closed under subtraction? 1 − 2 is not a positive integer even though both 1 and 2 are positive integers. What does it mean when a set is closed under addition?

### In Order For A Set Of Numbers To Be Closed Under Some Operation Would Mean That If You Take Any Two Elements.

Thus the sets ℂ (complex numbers), ℝ. 4 − 9 = −5. This set is closed only under addition, subtraction, and multiplication.