15 and 20
30 and 60
5 and 60 have a gcf of 5 and a LCM of 60
This doesn't work. The LCM of a pair of numbers has to be equal to or larger than the largest number of the pair. If one of the numbers is 60, the other is 120. 60 and 120 have a GCF of 60, not an LCM.
The LCM of 60 and 18 is 180
The LCM is 60.
The LCM is 60.
The LCM is 60
The LCM of 30 and 60 is 60
lcm(20, 60) = 60.
LCM(15, 20, 30) = 60
The answer is 60.
LCM of 15 and 60 = 60