3道gmat 数学概率排列组合题 1.On a certain transatlantic crossing,20 percent of a ship’s passengers held round-trip tickets and also took their cars abroad the ship.If 60 percent of the passengers with round-trip tickets did not take their

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3道gmat 数学概率排列组合题 1.On a certain transatlantic crossing,20 percent of a ship’s passengers held round-trip tickets and also took their cars abroad the ship.If 60 percent of the passengers with round-trip tickets did not take their

3道gmat 数学概率排列组合题 1.On a certain transatlantic crossing,20 percent of a ship’s passengers held round-trip tickets and also took their cars abroad the ship.If 60 percent of the passengers with round-trip tickets did not take their
3道gmat 数学概率排列组合题
1.On a certain transatlantic crossing,20 percent of a ship’s passengers held round-trip tickets and also took their cars abroad the ship.If 60 percent of the passengers with round-trip tickets did not take their cars abroad the ship,what percent of the ship’s passengers held round-trip tickets?A.33 1/3% B.40% C.50% D.60% E.66 2/3% 2.There are 8 books on a shelf,of which 2 are paperbacks and 6 are hardbacks.How many possible selections of 4 books from this self include at least one paperback?A.40 B.45 C.50 D.55 E.60 3.There are 8 magazines lying on a table; 4 are fashion magazines and the other 4 are sports magazines.If 3 magazines are to be selected at random from the 8 magazines,what is the probability that at least one of the fashion magazines will be selected?A.1/2 B.2/3 C.32/35 D.11/12 E.13/14 求指教 和具体解法 已晕= =

3道gmat 数学概率排列组合题 1.On a certain transatlantic crossing,20 percent of a ship’s passengers held round-trip tickets and also took their cars abroad the ship.If 60 percent of the passengers with round-trip tickets did not take their
是CDE吗?没学过gmat,正准备学 查看原帖>>

3道gmat 数学概率排列组合题 1.On a certain transatlantic crossing,20 percent of a ship’s passengers held round-trip tickets and also took their cars abroad the ship.If 60 percent of the passengers with round-trip tickets did not take their 排列组合数学 概率期望 高二数学选修2—3排列组合,概率分布.概率分布题怎么做?排列组合题怎么做?马上期末考了,求方法求指教. 概率,排列组合题 数学排列组合类型题 一道数学排列组合题 第二题.数学排列组合 概率排列组合 数学排列组合算概率问题.照片里的第七题怎么做? 一道数学排列组合题,插空法.3个歌舞,4个独唱,2个小品排成一份节目单,3个歌舞中任意两个都不排在一起的概率? 数学排列组合和概率怎么也学不好,怎么办? 数学总是考不好,特别是概率和排列组合 数学概率概率问题排列组合有5件不同的玩具全部分给3个儿童,求每人至少一件的概率 还是数学的排列组合加上概率的复合题将五个相同的球放入位于一排的8个格子里,每个至多放一个球,则3个空格相连的概率是（） 数学 这道排列组合的题,数字怎么解决? 这道数学排列组合的题种类怎么解决? 这道数学排列组合的题,二项式种类怎么解决? 这道数学排列组合的题NBA怎么解决?