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If the number is divisible by any number and the quotient comes out to a whole number, then that number is composite. The number is prime when divided by a number, the answer is a decimal, then the number is prime.

A Prime number has exactly two factors, 1 and the number itself. Any number having more factors is a composite number.

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Q: How do you determine if a number is prime or composite?
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Determine if the number 79 is Prime or Composite?

It is a prime.


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10, 25, 50 are the composite factors of the composite number 50. 2 and 5 are prime.


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How do divisibility ryles help you to determine if a number is prime or composite?

If a number is divisible by 3 or more numbers than that number is composite, if not than it is prime.


How can you use arrays to determine if a number prime or composite?

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How do you figure out a composite number?

A number can be factored to determine whether it is prime or composite. A prime number has exactly 2 factors, 1 and the number itself. A composite number has more than two factors.


Hwo do you determine if a number is prime or composite?

Prime numbers have two factors, composite numbers have more than two.


Do you need to know all of the factors of a number in order to determine if it prime or composite?

All natural numbers (counting numbers) greater than one are either prime or composite. If divisible by only one and the number itself, it is prime; if divisible by other natural numbers, then is composite. One is the only natural number that is neither prime nor composite.


How can a factor tree help you determine if a number is prime or composite?

Prime numbers don't have factor trees. So if you can create a tree, your number's composite.


How to easily determine prime and composite number?

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

No. There are techniques to find if it is prime