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Unfortunately, the term "whole numbers" is somewhat ambiguous - it means different things to different people.
If you mean "integers", yes, it is closed.
If you mean "positive integers" or "non-negative integers", no, it isn't.
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∙ 12y ago
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Is there a subset of the natural numbers that is closed for addition?
Yes. The entire set of natural numbers is closed under addition (but not subtraction). So are the even numbers (but not the odd numbers), the multiples of 3, of 4, etc.
Why are odd integers closed under multiplication but not under addition?
The numbers are not closed under addition because whole numbers, even integers, and natural numbers are closed.
Is the set of even whole numbers closed under multiplication?
Yes, it is closed. This means that if you multiply two even number, you again get a number within the set of even numbers.
Is the set of even integers closed under subtraction and division?
Subtraction: Yes. Division: No. 2/4 = is not an integer, let alone an even integer.
What sets of numbers are closed under addition?
I know that whole numbers, integers, negative numbers, positive numbers, and even numbers are. Anyone feel free to correct me.
What are closed numbers?
It depends on what the number is closed on. For example, even numbers are closed on addition. In other words for any two even numbers that are added, the sum is an even number. Numbers are closed if something applies to all the numbers included within a set. The set above includes only even numbers.
Why are even whole and natural numbers closed under addition?
For a set to be closed under an operation, doing the operations on any two members of the set must result in another member of the set.The set of even natural numbers is {2, 4, 6, ...}.When two even numbers are added, the result is also an even number.Adding two positive numbers results in a larger positive number.Thus, adding two even natural numbers together results in another even natural number and so is closed.The set of even whole numbers is {..., -6, -4, -2, 0, 2, 4, 6, ...}.When two even numbers are added, the result is also an even number.It does not matter which combination of positive and negative whole numbers are added as all positive and negative whole numbers (including zero) are in the set. Thus it is also 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.
How do you subtract 279.1-3.102?
282.202
Are the numbers 7 and 15 proportional?
Any pair of numbers, whole or fractional (or even irrational) are proportional.Any pair of numbers, whole or fractional (or even irrational) are proportional.Any pair of numbers, whole or fractional (or even irrational) are proportional.Any pair of numbers, whole or fractional (or even irrational) are proportional.
Are even numbers closed in addition?
Yes, they are.
Why cant a whole number ending in 8 be prime?
Whole numbers ending in 8 are even numbers. All even numbers except for 2 are composite numbers.
