煩請各高手解答
Two cards are drawn from a deck of playing cards with replacement. Given that one of the cards drawn is spade, Find the probability that the other card is hheart.
Probability
2008-06-09 5:14 am
回答 (3)
2008-06-09 5:43 am
✔ 最佳答案
Probability for the 2 cards (one must be spade and the other is heart)= 13/52 (one is spade) x 13/52 (one is heart) x 2 (no sequence)
= 1/4 x 1/4 x 2
=1/8
2008-06-13 12:29 am
分毋should not be 7
as a deck of card has 52 cards or 54 cards( including two jokers)
which both are not divisible by 7
Thus the deck of cards may include other cards or missing a few cards
as a deck of card has 52 cards or 54 cards( including two jokers)
which both are not divisible by 7
Thus the deck of cards may include other cards or missing a few cards
參考: me
2008-06-09 7:43 am
有replacement 而且是獨立事件 事件1 (第一張是spade) 應該不影響事件2 我認為 事件2 直接=
P(the other card is heart)= 13/52 = 1/4
P(the other card is heart)= 13/52 = 1/4
收錄日期: 2021-04-13 15:40:39
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080608000051KK02549