下面是2013年8月23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.
If, what is the value of
?
(A)
(B)
(C)
(D)
(E)
The correct answer is A
Explanation
If, then
, so
.
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:
For how many positive two-digit integers is the ones digit greater than twice the tens digit?
(A)
(B)
(C)
(D)
(E)
The correct answer is A
Explanation
The correct answer is (A). If the tens digit is, there are
positive two-digit integers with the ones digit greater than twice the tens digit:
and
. If the tens digit is
, there are
positive two-digit integers with the ones digit greater than twice the tens digit:
and
. If the tens digit is
, there are
positive two-digit integers with the ones digit greater than twice the tens digit:
and
. If the tens digit is
, there is
positive two-digit integer with the ones digit greater than twice the tens digit:
. If the tens digit is equal to or greater than
, then the ones digits, which cannot be greater than
, is not greater than twice the tens digit. Therefore, there is a total of
positive two-digit integers for which the ones digit is greater than twice the tens digit.
以上就是关于2013年8月23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。