大家帮看看2010年一月sat数学题会的人说下嘛,
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大家帮看看2010年一月sat数学题会的人说下嘛,
大家帮看看2010年一月sat数学题会的人说下嘛,
大家帮看看2010年一月sat数学题会的人说下嘛,
我忘不了你对我的好
穿越了那日月星晨
人最愚蠢的选择就是拿自己的生命来惩罚别人
来留住这所有的忧伤与甜蜜
啊·仿佛被那橙黄色的桌面围困着
At north high school, the ski club has 15 members and the debate club has 12 members. If a total of 11 students belong to only one of the two clubs, how many students belong to both clubs?<...
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At north high school, the ski club has 15 members and the debate club has 12 members. If a total of 11 students belong to only one of the two clubs, how many students belong to both clubs? suppose only x students belong to ski club, only y students belong to debate club, z students belong to both clubs. A 1/12 B 1/8 C 1/6 D 1/4 E 1/31, 4/4!=1/3!=1/6
A.2 B.7 C.8 D.12 E.16
15=x+z,
12=y+z,
27=x+y+2z=11+2z,
16=2z,
z=8.
Answer is C.8.
Answer is C.1/6
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