本课配套习题挑战模式1/3
单选题
难度系数:
1.有6个人站成一排照相,其中甲和乙必须站在最中间的方法有________种。
A: 24 |
B: 14 |
C: 36 |
D: 48 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOaKiueUsuWSjOS5meaNhue7keWcqOS4gOi1t+S9nOS4uuS4gOS4quWwj+e7hOi/m+ihjOaOkuWIl++8jOaciTLnp43mlrnlvI/jgII=
- 提示2:IOWJqeS9meeahDTkuKrlhYPntKDlhajmjpLliJfvvIzmnIkyNOenjeaWueW8j+OAguWFseaciTQ456eN5pa55byP44CC
- 答案:RA==
6Kej77ya56ys5LiA5q2l5oqK55Sy5ZKM5LmZ5o2G57uR5Zyo5LiA6LW35L2c5Li65LiA5Liq5bCP57uE6L+b6KGM5o6S5YiX77yM5pyJMuenjeaWueW8j+OAguesrOS6jOatpe+8muWJqeS9meeahDTkuKrlhYPntKDlhajmjpLliJfvvIzmnIkyNOenjeaWueW8j+OAguWFseaciTQ456eN5pa55byP44CC
本课配套习题挑战模式2/3
单选题
难度系数:
2.6个人站成一排照相,其中有两个人必须站在一起的方法有__________种。
A: 48 |
B: 96 |
C: 24 |
D: 12 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOaKiuW/hemhu+ebuOmCu+eahOS4pOS4quS6uuS9nOS4uuS4gOS4quWwj+e7hOaOkuWIl++8jOaciTLnp43mlrnms5XvvIzliankvZnnmoQ05Liq5YWD57Sg5o2G5Zyo5LiA6LW35L2c5Li65LiA5Liq5bCP57uE77yM6L+ZNOS4quWFg+e0oOaOkuWIl+aciTI056eN5pa55rOV
- 提示2:IOacgOWQjui/meS4pOS4quWwj+e7hOi/m+ihjOaOkuWIl++8jOaciTLnp43mlrnms5XvvIzliJnlhbHmnIk8aW1nIHdpZHRoPTk3IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzEwLzY0L3JCQUNGRk4xMEdHUlRJdXNBQUFCX2hCamZtQTU1OS5wbmciPuenjeaWueazleOAgg==
- 答案:Qg==
6Kej77ya5oqK5b+F6aG755u46YK755qE5Lik5Liq5Lq65L2c5Li65LiA5Liq5bCP57uE5o6S5YiX77yM5pyJMuenjeaWueazle+8jOWJqeS9meeahDTkuKrlhYPntKDmjYblnKjkuIDotbfkvZzkuLrkuIDkuKrlsI/nu4TvvIzov5k05Liq5YWD57Sg5o6S5YiX5pyJMjTnp43mlrnms5XvvIzmnIDlkI7ov5nkuKTkuKrlsI/nu4Tov5vooYzmjpLliJfvvIzmnIky56eN5pa55rOV77yM5YiZ5YWx5pyJPGltZyB3aWR0aD05NyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8xMC82NC9yQkFDRkZOMTBHR1JUSXVzQUFBQl9oQmpmbUE1NTkucG5nIj7np43mlrnms5XjgII=
本课配套习题挑战模式3/3
单选题
难度系数:
3.2位男生和3名女生共5个人站成一排,若男生甲和乙不站在最两端,又有2名女生必须相邻,则有________种站法。
A: 24 |
B: 12 |
C: 20 |
D: 36 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWFseaciTXkuKrkurrvvIznjrDlnKjnu5nlh7o15Liq5L2N572u77yM57yW5Y+35Li6MSwyLDMsNCw1LOWboOS4uuS4pOS4queUt+eUn+ebuOmCu++8jOWPiOS4jeiDveermeWcqOS4pOerr++8jOWPiOWboOS4uuS4pOS4quWls+eUn+W/hemhu+ebuOmCu++8jOaJgOS7pe+8jOeUsuWSjOS5meW/hemhu+S4gOS4quermeWcqDLlj7fkuIDkuKrnq5nlnKgz5Y+377yM5oiW6ICF5LiA5Liq56uZ5ZyoM+WPt++8jOS4gOS4quermeWcqDTlj7c=
- 提示2:IOW9k+eUsuWSjOS5meS4gOS4quermeWcqDLlj7fkuIDkuKrnq5nlnKgz5Y+35pe277yM5pyJMuenjeermeazle+8jOS7jjPlkI3lpbPnlJ/kuK3pgInlh7oy5ZCN56uZ5ZyoNOWPt+WSjDXlj7fvvIzmnIk8aW1nIHdpZHRoPTU1IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzRDLzZEL3JCQUNFMU4xMEd1Q3REbkdBQUFCOWI0UXhlWTA4Ny5wbmciPuenjeaWueazle+8jOatpOaXtuWFseaciTxpbWcgd2lkdGg9NjUgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNEMvNkQvckJBQ0UxTjEwR3p4Rlh6MEFBQUJ2TTdYXzhBMTcxLnBuZyI+56eN56uZ5rOV44CC
- 提示3: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
- 答案:QQ==
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