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It should be clear here that the answer is 4 (it cannot be greater than the difference of the numbers). In general you list the factors of each:
80 has factors 1, 2, 4, 5, 8, 10, 16, 20, 40, 80
84 has factors 1, 2, 3, 4, 7, 12, 21, 28, 42, 84
And pick the biggest number which here is 4.
What else can I help you with?
What is the greatest common factor of 35 and 84?
The greatest common factor (or greatest common divisor) of 35 and 84 is 7.
What is the greatest common factor of 76 and 84?
The greatest common factor of 76 and 84 is 4.
Greatest Common Factor of 84 and 105?
The greatest common factor of 84 and 105 is 21.
What is the greatest common factor of 37 and 84?
The greatest common factor of 37 and 84 is 1.
What are the greatest common factor of 84 and 40?
The greatest common factor of 84 , 40 = 4
What is the greatest common factor of 4272 and 84?
The greatest common factor of 4272 and 84 is 12.
What is the greatest common factor of 63and 84?
The greatest common factor of 63 , 84 = 21
What is the greatest common factor of 630 and 84?
The greatest common factor of 630 , 84 = 42
What is the greatest common factor of 84 and 315?
The Greatest Common Factor (GCF) of 84 and 315 is: 21
What is the greatest common factor of 26 and 84?
The greatest common factor of 26 and 84 is 2.
What is the greatest common factor of 84 132 and 156?
The greatest common factor of 84 132 and 156 is 12.
What is the greatest common factor of 12 66 and 84?
The greatest common factor of 12 66 and 84 is 6.
