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.
LCM(4, 5, 10) = 20
The LCM is 40.
LCM of 4, 10, and 24 = 120
LCM of 4, 10, and 20 = 20
The LCM for 4, 7, and 10 is: 140!
The LCM is 20.
The LCM is 40.
The LCM is 60.
The LCM is 20.
The LCM is 280.