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March 29, 2017

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One card is selected from a deck of playing cards. Determine the probability of selecting:


a card greater than 9 or a black card.

  • Math - ,

    For 10, jack, queen, king, ace, there are 4 of each. Half of the cards are black, but two each of above 5 values above will also be black. Either-or probability is found by adding the individual probabilities.

    20/52 + 26/52 - 10/52 = ?

  • Math - ,

    36/52??

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