A dice is thrown twice.
(a)How many combinations are there for one of the numbers shown up being"5'?
(b)Fid the probability that one of the numbers shown up is "5".
probability
2011-01-03 12:46 am
回答 (2)
2011-01-03 1:19 am
✔ 最佳答案
a)51 , 52 , 53 , 54 , 5615 , 25 , 35 , 45 , 65
556 x 2 - 1 = 11 combinations.b)Total 6 x 6 = 36 combinations.P(E) = 11/36
2011-01-02 20:45:43 補充：
啊! 55 不算。
a) The possible results are :
51 , 52 , 53 , 54 , 56
15 , 25 , 35 , 45 , 65
10 combinations.
b)
10/36 = 5/18
Sorry!
2011-01-03 3:57 am
但係答案係
(a)10
(b)5/18
(a)10
(b)5/18
收錄日期: 2021-04-21 22:18:11
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110102000051KK00881