Posted by **marko** on Thursday, December 15, 2011 at 7:23pm.

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?

- math word problem -
**Ms. Sue**, Thursday, December 15, 2011 at 7:34pm
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

- math word problem -
**marko**, Thursday, December 15, 2011 at 7:50pm
60

- math word problem -
**Ms. Sue**, Thursday, December 15, 2011 at 7:54pm
Right.

- math word problem -
**marko**, Thursday, December 15, 2011 at 8:38pm
so the least number of dancers that are needed for groups of 4,5,6 is

60

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