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Q: What are proper numbers?

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No 9 is not prime. It's factors are 1,3,9. Proper factors: 1,3. Factors are numbers that are multiplied with other numbers to get a product. Proper factors are factors of a number except for itself. No 9 is not prime. It's factors are 1,3,9. Proper factors: 1,3. Factors are numbers that are multiplied with other numbers to get a product. Proper factors are factors of a number except for itself. Composite numbers are numbers with more than 2 factors and more than 1 proper factor. Prime is the opposite of composite.

Some rational numbers are whole numbers, some are not. The set of whole numbers is a proper subset of rational numbers.

They are not. Counting numbers are a proper subset of whole numbers. Negative integers (-1, -2, -3 etc) are whole numbers but they are not counting numbers.

Mixed numbers are larger than proper fractions.

They form a proper subset of rational numbers.

Related questions

Yes.

Complex numbers are a proper superset of real numbers. That is to say, real numbers are a proper subset of complex numbers.

Counting numbers are a proper subset of whole numbers which are the same as integers which are a proper subset of rational numbers.

No. Natural numbers are a proper subset of real numbers.

All numbers are factors (of their multiples).

Prime numbers don't have proper factors.

Prime numbers don't have proper factors.

Prime numbers don't have proper factors.

Prime numbers don't have proper factors.

Prime numbers don't have proper factors.

Prime numbers don't have proper factors.

Prime numbers don't have proper factors.

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