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math

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Ben rolls a standard number cube (sides labeled with numbers 1 through 6). Find the probability that Ben rolls a number greater than 2 or an even number.

  • math - ,

    Events(x>2)={3,4,5,6}
    Events(even)={2,4,6}
    So

    B=Events(x>2)∪Events(even)
    ={3,4,5,6}∪{2,4,6}
    ={2,3,4,5,6}
    |B|=cardinality of B = 5
    Therefore the probability is 5/6

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