The GCF is 60.
The GCF is 60.
The greatest common factor of the numbers 120, 180 and 240 is 60. The GCF can't be any larger than the smallest difference between the numbers, which is 60. It is easy to see that 60 is a factor of each of the numbers in the set, so it is the GCF.
The GCF of 210 and 450 is 30.
GCF(210, 90) = 30.
The GCF is 120.
The GCF of 120, 240, and 300 is 60.
The GCF is 30.
GCF = 30
The GCF is 60.
The GCF is 60.
The GCF is 60.
The GCF is 30.
The GCF is 120.
The LCM of 15 and 80 is 240. Multiples of 15 are 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240, and so on. Multiples of 80 are 80, 160, 240, and so on. So the LCM is 240.
The GCF is 2.
30, 60, 90, 120, 150, 180, 210, 240, 270, . . .