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math

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in a high school there are 27 hockey players and 15 soccer players. if 8 persons played both sports, how many different people played in these sports.

  • math -

    Draw a Venn diagram
    It overlaps 8 (Intersection of hockey and soccer sets)
    27 - 8 =19 play only hockey
    15 - 8 = 7 play only soccer
    8 play both
    so there are 19+7+8 players total

  • math -

    thanks a lot, so is the answer those numbers added up?

  • math -

    find the 12th term of the harmonic secquence 1/2, 1/6,1/10...

  • math -

    3
    8 × 5
    4

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