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March 25, 2017

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Laurie is holding 6 red cards and 7 black cards. If two cards are selected at random(w/out replacement), what is the probability that the first card selected is red and the second is black?

  • Math - ,

    The probability of a favourable first draw is 6 cards out of 13.
    The probability of a favourable second draw, given the first one has succeded, is 5 cards out of 12.
    The probability of both happening will therefore be the product of the two.

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