The LCM of 28, 60, 120 and 135 is:

What is the smallest possible number which when divided by 7, 9 and 11 leaves a remainder 2 in each case?

What is the least common multiple (LCM) of 336, 528, and 240?

A milkman wants to empty a large drum filled with milk using one of the four measuring jars with capacities of 6, 9, 15, and 18 liters respectively. He finds that regardless of which jar he uses, there are always 4 liters of milk left in the drum. If the capacity of the drum is a multiple of 7, what is its minimum possible capacity?