There can only be one LCM. That's 940. The next common multiples are 1880 and 2820.
940
60, 120, 180
The LCM of the given three numbers is 20
The LCM of these three numbers is 80.
240
140 is the first anyway. I'll flag the question for more detail needed
The Least Common Multiple (LCM) for 5 20 35 is 140.
The lowest common multiple of these three numbers is 20.
The lowest common multiple of the three numbers is 180.
The LCM of the given three numbers is 180
The LCM of 20 and 20 is 20.
The first common multiple of 4, 5, and 10 is their least common multiple (LCM), which is the smallest number that is a multiple of all three numbers. The LCM of 4, 5, and 10 is 20. The next common multiple would be the next multiple of 20, which is 40. The third common multiple would be the next multiple of 20, which is 60.