排列与组合的问题有12个人,按照下列要求分配,求不同的分法种数. (1)分为两组,一组7人,一组5人; (2)分为甲、乙两组,甲组7人,乙组5人; (3)分为甲、乙两组,一组7人,一组5人; (4
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/31 19:26:37
![排列与组合的问题有12个人,按照下列要求分配,求不同的分法种数. (1)分为两组,一组7人,一组5人; (2)分为甲、乙两组,甲组7人,乙组5人; (3)分为甲、乙两组,一组7人,一组5人; (4](/uploads/image/z/5365303-7-3.jpg?t=%E6%8E%92%E5%88%97%E4%B8%8E%E7%BB%84%E5%90%88%E7%9A%84%E9%97%AE%E9%A2%98%E6%9C%8912%E4%B8%AA%E4%BA%BA%2C%E6%8C%89%E7%85%A7%E4%B8%8B%E5%88%97%E8%A6%81%E6%B1%82%E5%88%86%E9%85%8D%2C%E6%B1%82%E4%B8%8D%E5%90%8C%E7%9A%84%E5%88%86%E6%B3%95%E7%A7%8D%E6%95%B0%EF%BC%8E++%EF%BC%881%EF%BC%89%E5%88%86%E4%B8%BA%E4%B8%A4%E7%BB%84%2C%E4%B8%80%E7%BB%847%E4%BA%BA%2C%E4%B8%80%E7%BB%845%E4%BA%BA%EF%BC%9B++%EF%BC%882%EF%BC%89%E5%88%86%E4%B8%BA%E7%94%B2%E3%80%81%E4%B9%99%E4%B8%A4%E7%BB%84%2C%E7%94%B2%E7%BB%847%E4%BA%BA%2C%E4%B9%99%E7%BB%845%E4%BA%BA%EF%BC%9B++%EF%BC%883%EF%BC%89%E5%88%86%E4%B8%BA%E7%94%B2%E3%80%81%E4%B9%99%E4%B8%A4%E7%BB%84%2C%E4%B8%80%E7%BB%847%E4%BA%BA%2C%E4%B8%80%E7%BB%845%E4%BA%BA%EF%BC%9B++%EF%BC%884)
xSn0}V$NӪ$'@@яtM2 Ơ``_iR8ɯv۔2mDks:$%vNlgau5$IcH@6^,dѽ'II[N\X'AH#8 b"4!N/ɫo?
2g4/hc@3Vz?UW/6\nSS9>%sJ.=T$VJK87b^pE-(e&$VEN*r"M[+ctt}Swv[XWIuQ: _ЗJzv iu,CwB(s\OVY+#QSr0%ϡAK @h""K5Z\3TC4yZyAlpŜfxB=!jʶmL"x!}ZՈ\AX-VQ"Y֚2t6*g[i#L!F