1 and 2
1,2
Oh, dude, the greatest common factor of 40 and 54 is 2. Yeah, like, you can totally break down 40 into 2 x 2 x 2 x 5 and 54 into 2 x 3 x 3 x 3, and then you just pick out the common factors. Voilà, you've got your answer!
20/27 Solution Method: 40 = 2*2*2*5 (<-- these are the factors of 40) --- 54 = 2*3*3*3 (<-- these are the factors of 54) The only common factors in both the numerator & the denominator are 2. That means you can divide 40 by 2 & 54 by 2 to get 20/27.
The common factors of 32 and 54 are: 1 and 2
Common factors of 54 and 22 are: 1 and 2.
The common factors of 54 and 75 are 1 and 3.
Since 54 is a factor of 108, all of 54's factors are common and the GCF is 54 itself.
The common factors of 54 and 63 are: 1, 3, and 9
The common factors of 45 and 54 are: 1, 3, and 9
Since 18 is a factor of 54, all of its factors are common.
The common factors of 42 and 54 are: 1, 2, 3, and 6
The common factors of 6 and 54 are: 1, 2, 3, and 6