the world series in baseball continues until either the american league team or the national league team wins four games. how many different orders are possible (eg ANNAAA means the american league team wins in six games) if the series goes
a)4 games?
ans:2
b)5 games?
ans:8
c)6games?
20
d)7 games?
40
probability
2010-09-09 8:25 pm
回答 (1)
2010-09-10 4:44 am
✔ 最佳答案
a)Any series are formed by (AAAA) or (NNNN)= 2 possible b)Any series are formed by (AAAN)+A or (NNNA)+N ,4! / [(3!)(1!)] + 4! / [(3!)(1!)]= 8 possible c)Any series are formed by (AAANN)+A or (NNNAA)+N ,5! / [(3!)(2!)] + 5! / [(3!)(2!)] = 20 possible
d)(Any series are formed by AAANNN) + (A or N)6! / [(3!)(3!)] x 2= 40 possible
收錄日期: 2021-04-21 22:14:55
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100909000051KK00357