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23 votes
find the factors of each number. Write the common factor ( CF ) and then state the greatest common factor ( GCF) .

find the factors of each number. Write the common factor ( CF ) and then state the-example-1
User Joe Shaw
by
2.4k points

1 Answer

27 votes
27 votes

Given:

Two numbers are 12 and 21

To find:

The factors of 12 and 21, then find the common factor and the greatest common factor.

Solution:

Two numbers are 12 and 21. The prime factors of these two numbers are


12=2* 2* 3


21=3* 7

From the above factorization, it is clear that the factor 3 is common in both. So,

Common factor (CF) = 3

Only 3 is common in factorization of both. So,

Greatest common factor (GCF) = 3

Therefore, the common factor is 3 and the greatest common factor is also 3.

User Ahmed Elashker
by
2.9k points
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