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March 27, 2017

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Five cards are drawn from an ordinary deck without replacement. Find the probability of getting

a. All red cards
b. All diamonds
c. All aces

  • Probability - ,

    a)26C5/52C5
    b)13C5/52C5
    c)48/52C5

    52C5=2598960
    26C5=65780
    13C5=1287
    48=48

  • Probability - ,

    a. 26/52 * 25/51 * 24/50 * 23/49 * 22/48 = ?

    b. 13/52 * 12/51 * 11/50 *10/49 * 9/48 = ?

    c. 4/52 * 3/51 * 2/50 * 1/49 = ? It doesn't matter what the fifth card is.

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