...set of numbers has the
编辑： admin 2017-01-03
-
4
d
提示：
D
-1 in the set; -1+2=1 in the set;1+2=3 in the set;3+2=5 in the set
类似问题
类似问题1：GMAT Each of the integers from 0 to 9,inclusive,is written on a separate slip of blank paper and the ten slips are dropped into a hat.If the slips are then drawn one at a time without replacement,how many must be drawn to ensure that the numbers on t[英语科目]
题干问的是要抽几次才能保证其中任意抽出的2个数字之和是10.假设最坏的情况,抽出的是 0,1,2,3,4,5,这几个数任意2个加起来都不等于10.那么这样一共抽了6次.从第7次开始,抽出的数和前面的相加都等于10.所以选E
类似问题2：问一道GMAT数学?If 500 is the multiple of 100 that is closest to x and 400 is the multiple of 100 that is closest to y,which multiple of 100 is closet to x+y?(1) x+y(2) y
如果500是最接近100的x的倍数,400是最接近100的y的倍数.那么,100的哪个倍数最接近X+Y,最后一句应该是这个意思吧
类似问题3：A发生的概率是0.6,B发生的概率是0.45,问neither A nor B的概率是多少?(1) ab是独立事件（2）ab同时发生的概率是0.3（1）肯定是S了,但是（2）中P（AB）=0.3不等于0.6x0.45说明非独立.（2）是否可以算出n[数学科目]
原题是0.27选D.不是0.3.
类似问题4：求一道简单的gmat数学.一对夫妇生四个孩子,两男两女的概率?[数学科目]
先找出sample size:2^4=16.所以一共有16种可能,分别是:GGGG,GGGB,GGBG,GGBB,GBGG,GBGB,GBBG,GBBB,BGGG,BGGB,BGBG,BGBB,BBGG,BBGB,BBBG,BBBB.B是BOY,G是GIRL.所以如果是两男两女的机率就应该是6/16=3/8=0.375=37.5%.
类似问题5：英语翻译A rainstorm increased the amount of water stored in State J reservoirs from 124 billion gallons to 138 billio gallons.If the storm increased the amount of water in the reservoirs to 82 percent of total capacity,approximately how many bill
水库在大雨前距整个水库满差多少加仑的水?（没下雨之前要多少加仑的水,水库才会满?）
138除以0.82等于168.3
168.3减124等于44.3 billion gallons