(07年全国卷Ⅰ理)从班委会5名成员中选出3名,分别担任班级学习

07年全国卷Ⅰ理)从班委会5名成员中选出3名,分别担任班级学习委员、文娱委员与体育委员,其中甲、乙二人不能担任文娱委员,则不同的选法共有_____种。(用数字作答)

答案

答案:36

解析:从班委会5名成员中选出3名,分别担任班级学习委员、文娱委员与体育委员,其中甲、乙二人不能担任文娱委员,先从其余3人中选出1人担任文娱委员,再从4人中选2人担任学习委员和体育委员,不同的选法共有种。

相关题目

—Bill, can I get you anything to drink? —________. A. You are welcome B. N
—Bill, can I get you anything to drink? —________. A. You are welcome B. No problem C. I wouldn't mind a coffee D. Doesn't matter
下图中能正确表示哺乳动物成熟红细胞在一定O2浓度范围内,
下图中能正确表示哺乳动物成熟红细胞在一定O2浓度范围内,K+进入该细胞的速度与O2浓度关系的是                  
The basic flag of the United States is one of the world’s oldest national fla
The basic flag of the United States is one of the world’s oldest national flags. Only the basic flags of Austria, Denmark, Great Britain, the Netherlands, Sweden, and Switzerland are older. During
右图是对动物细胞有丝分裂时染色体数(a)、染色单体数(b
右图是对动物细胞有丝分裂时染色体数(a)、染色单体数(b)和DNA分子数(c)的统计图,下列解释肯定不正确的是(   )        A、①可以用于
在不需要考虑物体本身的大小和形状时,可以把物体简化为
在不需要考虑物体本身的大小和形状时,可以把物体简化为一个有质量的点,即质点。物理学中,把这种在原型基础上突出问题的主要方面,忽略次要
III   完型填空       15% Reports about stolen virtual property(虚拟
III   完型填空       15% Reports about stolen virtual property(虚拟财产), (for example, the money that is gained through Web games,) are becoming increasingly frequent.         W
                            The magnitude 7.9 quake s
                            The magnitude 7.9 quake struck Sichuan province on May 12 at around noontime, which may have increased the human death toll because many people w
复数的虚部是(    ) A.          B.          
复数的虚部是(    ) A.          B.            C.              D.

最新题目