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If there are 5 teams in one league and 6 teams in another league and if each team from one league plays one team from the other league once how many games are played?

  • Math -

    visualize the first set of teams as
    a b c d e
    and the second set of teams as
    1 2 3 4 5 6

    so we have
    a1 a2 a3 a4 a5 a6
    b1 b2................b6
    ....
    e1 .....................e6

    that would be 30 games

    or

    we have to choose one from each group
    number of games = C(5,1) * C(6,1) = 5*6 = 30

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