下面是2013年7月30日的SAT官方每日一题的内容，是关于数学方面的，题型是选择。SAT官方每日一题是collegeboard每天都会发布的题目，关于SAT考试的三个部分的各个题型。大家和无忧小编一起来看一下这个SAT官方每日一题吧。
SAT官方每日一题之数学---选择：
Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
All numbers divisible by both
and
are also divisible by which of the following?
(A)
(B)
(C)
(D)
(E)
The correct answer is A
Explanation
All numbers divisible by both
and
are the multiples of
and
. Since
and
have no prime factor in common
, then the least common multiple of
and
is equal to their product, namely
. Every other multiple of
and
is divisible by
. Thus, if
is divisible by a number then all the multiples of
and
are divisible by that number. Therefore, it is enough to check by which number in the given options is
divisible. Only
divides
and none of the other do. The answer must be
.
下面为大家提供一些和这些SAT官方每日一题相似的题目，供大家练习：
Every student who studies art in a certain school receives exactly one of the grades A, B, C, or D. If 
of the students receive A’s, 
receive B’s, 
receive C’s, and 
students receive D’s, how many students in the school study art?
(A) 
(B) 
(C) 
(D) 
(E) 
The correct answer is D
Explanation
The students who receive A’s, B’s, and C’s account for 
of the students, that is, 
. This leaves 
of the students receiving D’s. You know that 
students receive D’s, so 
is 
of the total. This means that the total number of students is
times 
, or 
.
以上就是关于2013年7月30日SAT官方每日一题中数学部分的详细内容，包括了题目和选项以及答案，后面附有一道相关的练习题。大家可以在备考SAT的过程中关注SAT每日一题的内容，这样就可以更好有不间断的练习，也就能在日积月累的过程中得到提高。
