本课配套习题挑战模式1/3
单选题
难度系数:
1.6个人站成一排,甲必须站在乙的左边,共有( )种排法。
A: 360 |
B: 240 |
C: 340 |
D: 520 |
一次做对,真牛!
+5奖励规则>
- 提示1:IDbkuKrkurrlhajmjpLliJfvvIzlhbHmnIk8aW1nIHdpZHRoPTE1IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzIxLzk4L3JCQUNGRk5fQlVqeG05dWhBQUFCYllOVC04azAwMi5wbmciPuenjeS4jeWQjOeahOaOkuWIl+aWueW8j+OAgueUseS6jueUsuWSjOS5meeahOebuOWvuemhuuW6j+aYr+ehruWumueahO+8jOaJgOS7peW6lOivpeWGjemZpOS7pTxpbWcgd2lkdGg9MTUgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNUQvOEEvckJBQ0UxTl9CVWpoVk90bEFBQUJhT0s2REZnNjM2LnBuZyI+IQ==
- 提示2:IOato+ino++8mjxpbWcgd2lkdGg9NTMgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMjEvOTgvckJBQ0ZGTl9CVWpnYUItVUFBQUNCLWhKWk1nMTczLnBuZyI+
- 答案:QQ==
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
本课配套习题挑战模式2/3
单选题
难度系数:
2.4名男生和4名女生站成一排,其中4名男生按照高矮的顺序排列,共有( )种排列方式!
A: 590 |
B: 1450 |
C: 1680 |
D: 240 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOiuqTjkuKrkurrlhajmjpLliJfvvIzlhbHmnIk8aW1nIHdpZHRoPTE1IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzIxLzk4L3JCQUNGRk5fQlZieFoxNndBQUFCWTJ0Mmt1RTkzOC5wbmciPuenjeaOkuWIl+aWueW8j++8jDTlkI3nlLfnlJ/nmoTnm7jlr7npobrluo/mmK/noa7lrprnmoTvvIzmiJHku6zlr7nov5k05ZCN55S355Sf6L+b6KGM5o6S5YiX77yM5YWx5pyJPGltZyB3aWR0aD0xNSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC81RC84QS9yQkFDRTFOX0JWYnpnd2VJQUFBQmViMGJVNzQwOTMucG5nIj7np43mjpLliJfmlrnlvI/vvIE=
- 提示2:IOS4pOiAheebuOmZpO+8jDxpbWcgd2lkdGg9MTYgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMjEvOTgvckJBQ0ZGTl9CVmFSQVZoNUFBQUJtYlVDVVIwMTI2LnBuZyI+PTE2ODA=
- 答案:Qw==
6Kej77ya6K6pOOS4quS6uuWFqOaOkuWIl++8jOWFseaciTxpbWcgd2lkdGg9MTUgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMjEvOTgvckJBQ0ZGTl9CVmJ4WjE2d0FBQUJZMnQya3VFOTM4LnBuZyI+56eN5o6S5YiX5pa55byP77yMNOWQjeeUt+eUn+eahOebuOWvuemhuuW6j+aYr+ehruWumueahO+8jOaIkeS7rOWvuei/mTTlkI3nlLfnlJ/ov5vooYzmjpLliJfvvIzlhbHmnIk8aW1nIHdpZHRoPTE1IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzVELzhBL3JCQUNFMU5fQlZiemd3ZUlBQUFCZWIwYlU3NDA5My5wbmciPuenjeaOkuWIl+aWueW8j++8geS4pOiAheebuOmZpOW+l+WIsO+8mjxpbWcgd2lkdGg9MTYgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMjEvOTgvckJBQ0ZGTl9CVmFSQVZoNUFBQUJtYlVDVVIwMTI2LnBuZyI+PTE2ODA=
本课配套习题挑战模式3/3
单选题
难度系数:
3.期中考试中要考9门,语文要在数学之前考,有()种考试安排方式。
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOesrOS4gOatpe+8muaJgOacieeahOenkeebruWFqOaOkuWIl++8jOWFseaciTxpbWcgd2lkdGg9MTUgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMjEvOTgvckJBQ0ZGTl9CWVRBX244OEFBQUJaNlVXemtnODA2LnBuZyI+56eN5o6S5YiX5pa55byP
- 提示2:IOesrOS6jOatpe+8muiuoeeul+mhuuW6j+S7peehruWumuWFg+e0oOeahOaOkuWIl+aVsO+8jOaciTxpbWcgd2lkdGg9MTUgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNUQvOEEvckJBQ0UxTl9CVWpoVk90bEFBQUJhT0s2REZnNjM2LnBuZyI+56eN5o6S5YiX5pa55byP
- 提示3:IOS4pOiAheebuOmZpO+8jOW+lzxpbWcgd2lkdGg9MTYgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMjEvOTgvckJBQ0ZGTl9CWVBpUFRDUkFBQUJ3UEt6WVp3ODE2LnBuZyI+
- 答案:QQ==
6Kej77ya56ys5LiA5q2l77ya5omA5pyJ55qE56eR55uu5YWo5o6S5YiX77yM5YWx5pyJPGltZyB3aWR0aD0xNSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8yMS85OC9yQkFDRkZOX0JZVEFfbjg4QUFBQlo2VVd6a2c4MDYucG5nIj7np43mjpLliJfmlrnlvI/vvIznrKzkuozmraXvvJrorqHnrpfpobrluo/ku6Xnoa7lrprlhYPntKDnmoTmjpLliJfmlbDvvIzmnIk8aW1nIHdpZHRoPTE1IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzVELzhBL3JCQUNFMU5fQlVqaFZPdGxBQUFCYU9LNkRGZzYzNi5wbmciPuenjeaOkuWIl+aWueW8j++8jOS4pOiAheebuOmZpO+8jOW+lzxpbWcgd2lkdGg9MTYgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMjEvOTgvckJBQ0ZGTl9CWVBpUFRDUkFBQUJ3UEt6WVp3ODE2LnBuZyI+