Q.There are 10 red balls, 5 blue balls, 4 yellow balls and 2 green balls.
How many combinations can be made if 5 of the balls are selected.
Hints:
(red, blue, blue, green, yellow) and (blue, blue, yellow, green, red) are regarded
as same combination.
Procedures are required!
Probability question (urgent!)
2010-05-20 9:39 am
回答 (1)
2010-05-20 6:39 pm
✔ 最佳答案
=====================================================圖片參考：http://img21.imageshack.us/img21/8576/64674238.png
2010-05-20 10:40:07 補充：
http://img21.imageshack.us/img21/8576/64674238.png
收錄日期: 2021-04-23 23:28:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100520000051KK00086