GRE
The least possible number of additional 100-point tests he must take to raise his cumulative average to 90
12
$$\frac{x+y}{y}$$
$$\frac{x^{2}-y^{2}}{xy-y^{2}}$$
s+3
t
The greatest prime factor of N
15
$$x$$
$$y$$
$$\frac{BC+CD}{BD}$$
2
$$\frac{s}{t}$$+0.4
$$\frac{5s+2t}{5t}$$
25000 +道题目
236本备考书籍