The question is in the link below:
http://www.sendspace.com/file/pfilwy
I want to ask 8 (c) + 9 (c) + 10 (b) (c) + 11 (c) (d)
please shows steps.
answers on the second page
thank you for your help
nCr and nPr please help
2010-12-22 1:02 am
回答 (1)
2010-12-23 6:17 pm
✔ 最佳答案
8 (c) 4C0 + 4C1 + 4C2 + 4C3 + 4C4 = 16I only know this
收錄日期: 2021-04-16 12:01:46
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101221000051KK02551