下面为大家总结了最新的gre猴哥数学难题。有很多gre考生对gre数学考试十分苦恼，其实最有效的方法就是多练习，把数学基础知识记牢，这样才能在考试中对答如流。而gre数学考试中也会出现一些难题，想拿高分也十分不容易。
31.The average (arithmetic mean) quiz score is closest to which of the following?
A.5 B.6 C.7 D.8 E.9
32.From the set of 6 letters A, B, C, D, E, and F, there are 20 different 3-letter subsets that could be selected.
Column A: The number of 3-letter subsets that include the letter F
Column B: 10
answer: C
33. In the Ratings for Symptom H table shown which of the following could be r, s, and t, respectively?
A.0,7,6 B.1,1,9 C.1,10,4 D.2,19,0 E.2,4,5