GRE
The area of triangular region ABG
$$\frac{1}{4}$$ of the area of triangular region ACE
$$r+s$$
$$0$$
The number of different values of $$x$$ that satisfy the equation
3
The number of copies of Magazine X that were sold last month at the subscription price
Twice the number of copies of Magazine X that were sold last month at the cover price
$$n$$
$$r$$
RT
ST
$$s+t$$
$$b$$
25000 +道题目
269本备考书籍