SAT数学考试虽然简单，我们也不能够轻视。下面小编为大家整理了两道SAT数学练习题，包括答案，希望能够帮助大家更好地备考SAT数学考试。
1、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).
2、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 
.
以上便是无忧小编为大家整理的两道SAT数学练习题以及答案的相关介绍，希望对大家有所帮助。更多SAT考试相关资料尽在无忧教育网SAT考试频道，无忧小编祝大家都能取得理想的SAT数学考试成绩!
