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March 29, 2017

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Three cards are drawn without replacement from an ordinary deck of 52 playing cards. What is the probability that the second and third cards are kings if the first card was not a king?

  • probability/math - ,

    After the first card is drawn, there are 4 kings in a 51 card deck. There is therefore a 4/51 probability that the next card is a king. When that happends, there is a 3/50 probability that the third card is a ling.

    So, multiply 4/51 by 3/50 for your answer. The fraction that you should be reduced to lowest terms.

    http://www.webmath.com/redfract.html

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