SAT官方每日一题：2012年4月9日
2012-04-21来源:互联网
2012年04月09日
考试类型: Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
If a number is chosen at random from the set
, what is the probability that it is a member of the solution set of both 
and 
?
A.
B.
C.
D.
E.
|
正确答案:C 解析: If
|
and 
, then 
. The numbers from the listed set that satisfy these inequalities are 
and 
. There are five elements in the listed set, so the probability of a number chosen at random from the set being a member of the solution set of both inequalities is 
.
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