Probability
2011-01-22 8:44 pm
5 cards are drawn from a deck of 52 cards, find the probability of getting 3 kings.
回答 (5)
2011-01-22 8:51 pm
✔ 最佳答案
3 kings out of 4 have 4C3 ways ,the other two cards are not kings out of 52 - 4 = 48 cards , 48C2 ways ,Total 4C3 * 48C2 ways.P(E) = 4C3 * 48C2 / 52C5= 94/54145
2011-01-23 7:38 pm
002 has not even considered the situation of drawing only 5 cards.
2011-01-22 10:20 pm
002 has not considered different possible order of placement in drawing 3 Kings among the 5 cards.
2011-01-22 9:00 pm
002 must be grong
2011-01-22 8:59 pm
P{getting 3 kings from a deck of cards}= (4/52)×(3/51)×(2/50)= 3/16900
2011-01-24 18:42:46 補充：
Apology for calculating the wrong answer. However, the question hasn't stated clearly whether we should consider the order of drawing or replacement or not.
2011-01-24 18:42:46 補充：
Apology for calculating the wrong answer. However, the question hasn't stated clearly whether we should consider the order of drawing or replacement or not.
參考: My mathematics ability
收錄日期: 2021-04-21 22:19:28
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110122000051KK00447