GRE
$$(3^{-1}+3^{-2})^{-1}$$
1
||$$(\frac{1}{3})ab$$
a+b
The shaded area
The unshaded area
Area of square I
Area of square II + area of square III
x+y
||$$\frac{1}{x+y}$$
AB
AC
90°
Measure of angle Q
x
y
The circumference of circle N
The circumference of circle M
$$\frac{x}{y}$$
$$\frac{y}{x}$$
25000 +道题目
247本备考书籍