math word problem
posted by marko .
what is the least number of dancers that are needed if a choreographer wants to arrange them in groups of 4,5, or 6 with none left?
im not understanding the question. can you help?

You're looking for the greatest common multiple of 4, 5, and 6
Which of these multiples of 6 is also a multiple of 4 and 5?
6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72 
60

Right.

so the least number of dancers that are needed for groups of 4,5,6 is
60