GRE
The ones digit of x+y
5
$$R*-R$$
$$200$$
N
2
The number of these offices with floor areas of 250 square feet
The number of these offices with floor areas of 300 square feet
The value of n if at least one of the groups consists of 3 people
6
x
m
$$x$$
$$y$$
$$(-1)^{p}$$
-1
The number of two-digit positive integers for which the units digit is not equal to the tens digit
80
The $$26^{th}$$ digit of N from left to right
The $$45^{th}$$ digit of N from left to right
25000 +道题目
252本备考书籍