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Factoring and Multiples

What are the common factors of 3 and 7?

Answer

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April 26, 2009 6:31PM

A factor is a divisor - a number that will evenly divide into another number.

One way to determine the common factors (and greatest common factor) is to find all the factors of the numbers and compare them.

The factors of 3 are 1 and 3.

The factors of 7 are 1 and 7.

The only common factor is 1.

In a case like this, since both numbers are prime, there will only be one common factor - the number 1.