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math word problem

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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 -

    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 -

    60

  • math word problem -

    Right.

  • math word problem -

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

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