120 and 140 have lots of common factors. e.g. 10, 5, 1, 20 You probably need to find the Highest common factor which is 20. But if you are doing your homework you probably need to show how you worked it out: 1 - Find the prime factors for each number 2 - Write the ones that appear in both in a list 3 - Multiply the numbers in your list
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The greatest common factor of the numbers 120 and 180 is 60.
The Greatest Common Factor (GCF) of 140, 105, and 70 is 35.
Since 40 is a factor of 120, all of its factors are common.
The GCF is 14.
The Greatest Common Factor of 36 and 120 (GCF) is: 12