Since 72 is a multiple of 24, and the greatest common factor cannot be greater than the smallest number, the greatest common factor of 84, 72, and 24 will be the greatest common factor of 84 and 24.
The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84.
The factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24.
(The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72.)
The greatest common factor is 12.
Or, you can look at the prime factors.
The prime factors of 84 are 2, 2, 3, and 7.
The prime factors of 24 are 2, 2, 2, and 3.
(The prime factors of 72 are 2, 2, 2, 3, and 3.)
The prime factors they have in common are 2, 2, and 3, so the greatest common factor is 2 x 2 x 3 = 12.
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The Greatest Common Factor of 24, 36, 72 is 12.
The greatest common factor (GCF) is 24.
The Greatest Common Factor, or GCF, is 24. 24 * 3 =72 24 * 4 =96 24 * 8 =192
The greatest common factor of 72 and 96 is 24.
The greatest common factor of 48 and 72 is 24.The factors of 48 are: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48.The factors of 72 are: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72.The factors that are common to 48 and 72 are: 1, 2, 3, 4, 6, 8, 12, 24First find the prime factors of each:48=2X2X2X2X372= 2X2X2X3X3then find the matching pairs in this case 2X2X2X3= 24GCF = 24The GCF is 24.The GCF is 24.The GCF is 24.