GRE
The range of the 12 integers
24
The sum of the reciprocals of the first $$2n$$ positive integers
$$1$$ more than the sum of the reciprocals of the first $$n$$ positive integers
n
k
$$\frac{1}{9}$$ of $$x$$
$$11$$ percent of $$x$$
The sum of the nine integers
30
25000 +道题目
247本备考书籍