Mathematics

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A survey in a class shows that 14 of the student plays football,10 plays handball and 5 play both football and handball . How many student are there in a class if every one plays at least one of this game.

  • Mathematics -

    Number(football OR handball) = Number(football) + number(handball) - number(football AND handball)
    = 14+10-5 = 19

    or make a Venn Diagram and fill in the values.

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