2017年1月21日SAT官方每日一题---数学选择.

　　为了让我们更好的适应sat考试，sat官网每天都会有sat官方每日一题，下面是小编为您整理的2016年1月sat官方每日一题，是数学选择，让我们一起来看一看这道数学选择吧。

　　Read the following SAT test question and then click on a button to select your answer.

　　If S is the set of positive integers that are multiples of 7, and if T is the set of positive integers that are multiples of 13, how many integers are in the intersection of S and T?

　　(A) None

　　(B) One

　　(C) Seven

　　(D) Thirteen

　　(E) More than thirteen

　　答案：E

　　解析：

　　The intersection of sets S and T is the set of integers that are in S and also in T. Set S consists of all positive integers that are multiples of 7, and set T consists of all positive integers that are multiples of 13, so the intersection of S and T is the set of positive integers that are multiples of both 7 and 13. This is the set of all positive integers that are multiples of 7*13 = 91. There are an infinite number of positive integers that are multiples of 91, so there are more than thirteen integers in the intersection of S and T.

　　上面是小编为您整理的2016年1月sat官方每日一题，是数学选择，为了让我们更好的适应sat考试，sat官网每天都会有sat官方每日一题，让我们一起来看一看这道数学选择吧。