What is the greatest common factor of 4, 12, and 24?

1 Answer
Shell
Nov 5, 2016

The GCF is 4.

Explanation:

The greatest common factor (GCF) is the biggest number that divides evenly into all three numbers.

Sometimes it helps to list the factors of each number.

Factors of 4: color(white)(aaa)1, color(red)4

Factors of 12: color(white)(aa)1, 2, 3, color(red)4, 6, 12

Factors of 24: color(white)(aa)1, 2, 3, color(red)4, 6, 8, 12, 24

The greatest (biggest) factor that is common to (appears in all three lists of factors) of 4, 12 and 24 is color(red)4.

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