To figure out the Least Common Multiple for these numbers, list their multiples and find the lowest one that matches. For example,
4: 4, 8, 12, 16, 20, 24, 28...
10: 10, 20, 30...
In this case, 20 would be the Least Common Multiple, since it's the first one that matches.
The LCM is 140.
The LCM is 60.
The LCM is 40.
LCM(4, 5, 10) = 20
LCM of 4, 10, and 20 = 20
LCM of 4, 10, and 24 = 120
The LCM for 4, 7, and 10 is: 140!
The LCM is 20.
The LCM is 40.
The LCM is 280.
The LCM is 120.
The LCM is 60.