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The 6 fourth-grade classes at Marathon Elementary School are having a kick-ball tournament. Each class must play each other one in the tournament. How many kick-ball games must be scheduled?

  • Mathematicas -

    6x6=36 games

  • Mathematicas -

    There will be (6x5)/2 or 15 games

    (class A cannot play against classA, as would be the case in lisa's answer.
    I also divided by 2 since class B vs class C is the same game as class C vs class B etc)

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