Any well-defined set of numbers.
No. The sum as well as product of two even numbers can only be an even number.
There are 999 whole numbers less than 1000. Whole numbers are all the positive integers starting from 1 up to 999. The number 1000 is not included because it is not less than 1000. So, the total count of whole numbers less than 1000 is 999.
Count
Counting can theoretically continue indefinitely, as numbers are infinite. However, in practical applications, counting typically ends when a specific quantity or range has been reached. For example, when counting objects, the counting ends when all objects have been accounted for. In mathematics, counting can also end when a specific number or pattern is identified.
Yes, except for one thing: mathematicians are not agreed whether 0 belongs to it.
Yes, except for one thing: mathematicians are not agreed whether 0 belongs to it.
Yes. Even numbers greater than 100 is a well defined set. (Although it is a set with an infinite number of members)
The set is well defined. Whether or not a given integer belongs to the set of prime numbers is clearly defined even if, for extremely large numbers, it may prove impossible to determine the status of that number.
Yes it is. Given any number you can decide whether or not it belongs to the set.
The set is well defined. Whether or not a given integer belongs to the set of prime numbers is clearly defined even if, for extremely large numbers, it may prove impossible to determine the status of that number.
Yes, they ARE.
Well, there is a clear definition, and at least in theory you can always determine whether a number is a primer number or not, so I would say, yes.
Prime numbers have only 2 factors and their set is not well defined because they do not follow an orderly mathematical pattern.
Any well-defined set of numbers.
yes
If there exists even one single item for which you cannot say whether it is in the set or not, the set is not well defined.