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A number is composite if it has more than two factors. Once you find a third, you know.

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โˆ™ 2015-08-09 18:03:07
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Q: How do you know it is a composite number?
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Related questions

How do you know 120 is a composite number?

You know 120 is a composite number because it is an even number that is greater than 2.


Is 649 prime or composite?

No it is a composite number if you want to know


How do you determine a composite number?

Composite numbers have more than two factors. Once you find a third factor, you know your number is composite.


How do you know 28 is composite number?

We know that 28 is a composite number because:It is an even numberIt is divisible by more than 2 numbers


Do you need to know all of the factors of number to know if it is prime or composite?

No, if a number has even one additional factor besides itself and the number one, then you automatically know it's composite.


Is 276 a prime or composite number?

Composite: i know it can at least be divided by 2 and 3


What is a composite number list 3 composite numbers?

dont know dont care


Do you need to know all of the factors of a number to know it is prime or composite?

To know that a number is prime you need to know that it has no factors other than 1 and the number itself.To know that a number is composite you only need to know one factor other than the number itself or 1.


How do you know a number is a composite number?

It has more than two factors.


Why is it important to know if a number is prime or composite?

A prime number can never be composite in any case. There is an exception for 2 which is both.


How would you know if 86 is composite?

The only even prime number is 2. Every other even number is composite.


Is 83 composite-?

For goodness sake! This will be on a test one day and you will not know it! But, the answer is no, it is prime

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