Quantity A Quantity B
The average of the 120numbers in list Z The median of the 120 numbers in list Z
A中,平均数肯定就是两组的平均数的和的一半,也就是/2=4.9,因为两组的人数相同,而B中median就是/2=5.5,所以就是B了。。
6.The figure above shows the graph of the function f in the xy-plane. What is
the value of f ) ?
A 2
B 1
C 0
D 1
E 2
这个题就是读图题了,一重重的往外算就好了,f =2,f=1,即D
7.By weight, liquid A makes up 8 percent of solution R and 18 percent of solution S. If 3 grams of solution R are mixed with 7 grams of solution S, then liquid A accounts for what percent of the weight of the resulting solution?
A 10%
B 13%
C 15%
D 19%
E 26%
这个题小学也经常遇到,/=15%
8.Of the 700 members of a certain organization, 120 are lawyers. Two members of the organization will be selected at random. Which of the following is closest to the probability that neither of the members selected will be a lawyer?
A 0.5
B 0.6
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