现有编号为1,2,3号的3个信箱和编号为A,B,C,D的4封信,( 1)若从4封信中任选3封分别投入1号信箱的概率是多现有编号为1,2,3号的3个信箱和编号为A,B,C,D的4封信,(1)若从4封信中任选3封分别投入1
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/21 08:10:32
![现有编号为1,2,3号的3个信箱和编号为A,B,C,D的4封信,( 1)若从4封信中任选3封分别投入1号信箱的概率是多现有编号为1,2,3号的3个信箱和编号为A,B,C,D的4封信,(1)若从4封信中任选3封分别投入1](/uploads/image/z/12555393-33-3.jpg?t=%E7%8E%B0%E6%9C%89%E7%BC%96%E5%8F%B7%E4%B8%BA1%2C2%2C3%E5%8F%B7%E7%9A%843%E4%B8%AA%E4%BF%A1%E7%AE%B1%E5%92%8C%E7%BC%96%E5%8F%B7%E4%B8%BAA%2CB%2CC%2CD%E7%9A%844%E5%B0%81%E4%BF%A1%2C%EF%BC%88+1%EF%BC%89%E8%8B%A5%E4%BB%8E4%E5%B0%81%E4%BF%A1%E4%B8%AD%E4%BB%BB%E9%80%893%E5%B0%81%E5%88%86%E5%88%AB%E6%8A%95%E5%85%A51%E5%8F%B7%E4%BF%A1%E7%AE%B1%E7%9A%84%E6%A6%82%E7%8E%87%E6%98%AF%E5%A4%9A%E7%8E%B0%E6%9C%89%E7%BC%96%E5%8F%B7%E4%B8%BA1%2C2%2C3%E5%8F%B7%E7%9A%843%E4%B8%AA%E4%BF%A1%E7%AE%B1%E5%92%8C%E7%BC%96%E5%8F%B7%E4%B8%BAA%2CB%2CC%2CD%E7%9A%844%E5%B0%81%E4%BF%A1%2C%EF%BC%881%EF%BC%89%E8%8B%A5%E4%BB%8E4%E5%B0%81%E4%BF%A1%E4%B8%AD%E4%BB%BB%E9%80%893%E5%B0%81%E5%88%86%E5%88%AB%E6%8A%95%E5%85%A51)
xTNQDԆa1p-V":}f_:s&&>4mɄ/k,/0q
gܴ,4ڪ=~ѴD3?D8rcɴ(?rFnp'=EH(HbgίjkB<"s?~ňO
nE{$V
D0yfAL%OQ4*}jOnz9ȿn붪ȪIC.*
rWL
)XpӸ20q36?6U~hFQ7dqt?C
@sԱ65t*R7N Y'](Ì[9GMcR2z=[,܂Ç[S* V2UtzmnR,keSNsP)an~FKG,ND[
= NNqr/LW==eFHz(Ĵ+Pk3G'VaXmE@\|K*q3%PGɨDF r