Probability

[匿名]

2010-10-03 6:00 am

Rule of a card game as follows:
1. There are 6 cards : 7,8,9,10, J and Q.
2. Get a 'Q' in the 1st draw will win the game at once and the game ends.
3. Get a 'J' in the 1st draw will lose the game at once and the game ends.
4. If get either 7,8,9 or 10 in the 1st draw, the card is replaced and draw again and again until the same card or the 'Q' card is drawn. If the same card is drawn before 'Q', the game is won (this is called 2nd win). If the 'Q' card is drawn before the same card, the game is lose.
Find : (a) Probability of 2nd win. (b) Overall probability of winning the game.

回答 (1)

用戶9112

2010-10-03 10:48 pm

✔ 最佳答案

=======================================================

圖片參考：http://img52.imageshack.us/img52/6057/82433611.png

2010-10-03 14:48:59 補充：
http://img52.imageshack.us/img52/6057/82433611.png

2010-10-05 08:16:31 補充：
There are four cards, 7,8,9,10 that can lead to second win. The probability for second win is 1/12 for each of the four cases leading to a total of 1/3.

👍 0 👎 0