Oh, dude, you want me to do math? Fine, fine. The common factors of 42 and 110 are 1, 2, and 7. So, like, those are the numbers that can divide both 42 and 110 without leaving a remainder. Cool, right? Math is so exciting.
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A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that both numbers have in common. One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 110 are 1, 2, 5, 10, 11, 22, 55, and 110. The common factors are 1 and 2. Therefore, the greatest common factor is 2.
The common factors of 22 and 42 are: 1 and 2
The common factors of 42 and 77 are: 1 and 7
The common factors of 42 and 56 are 1,2,7 and 14
The common factors of 42 and 60 are: 1, 2, 3, and 6