GRE
The ratio of the perimeter of square Ⅱ to the perimeter of square I
The ratio of the area of square Ⅱ to the square of square II
The shortest distance between the graphs of the two equations
1
The sum of the digits of $$n$$
The sum of the digits of $$k$$
The probability that both events E and F will occur
$$pq$$
The probability that Werner will not decode the message
0.5
$$\frac{x}{y}$$
$$2$$
25000 +道题目
6本备考书籍