下面是两道SAT数学练习题的内容，包括了答案解析。SAT数学练习题是大家熟悉SAT数学考试出题方式和思考方向最重要的途径，下面我们一起来看看这两道SAT数学练习题的具体内容吧，看看有哪些可取之处。
1、If
is the set of positive integers that are multiples of
, and if
is the set of positive integers that are multiples of
, how many integers are in the intersection of
and
?
Answer Choices
(A) None
(B) One
(C) Seven
(D) Thirteen
(E) More than thirteen
The correct answer is E
Explanation
The intersection of sets 
and 
is the set of integers that are in 
and also in 
. Set 
consists of all positive integers that are multiples of 
, and set 
consists of all positive integers that are multiples of 
, so the intersection of 
and 
is the set of positive integers that are multiples of both 
and 
. This is the set of all positive integers that are multiples of 
. There are an infinite number of positive integers that are multiples of 
, so there are more than thirteen integers in the intersection of 
and 
.
2、If 
is divisible by 
, 
, and 
, which of the following is also divisible by these numbers?
Answer Choices
(A) 
(B) 
(C) 
(D) 
(E) 
The correct answer is D
Explanation
Since 
is divisible by 
, 
, and 
, 
must be a multiple of 
, as 
is the least common multiple of 
, 
, and 
. Some multiples of 
are 
, 
, 
, 
, and 
.
If you add two multiples of 
, the sum will also be a multiple of 
. For example, 
and 
are multiples of 
and their sum, 
, is also a multiple of 
.
If you add a multiple of 
to a number that is not a multiple of 
, the sum will not be a multiple of 
. For example, 
is a multiple of 
and 
is not. Their sum, 
, is not a multiple of 
.
The question asks which answer choice is divisible by 
, 
, and 
; that is, which answer choice is a multiple of 
. All the answer choices are in the form of "
plus a number." Only choice (D), 
, has 
added to a multiple of 
. The sum of 
and 
is also a multiple of 
, so the correct answer is choice (D).
以上就是这两道SAT数学练习题的全部内容，后面的答案解析非常清晰详细。大家在备考SAT数学考试的时候，一定要以掌握解题的思路为备考的重点，对于知识点的补充要更加的全面，这样才能更好的迎接SAT数学考试。
更多SAT数学相关：
北京SAT数学培训
SAT数学练习题目两道
SAT数学练习题一道
SAT数学考试内容和范围
