GRE

y

8

The area of the circle

$$\frac{1600}{π}$$

The ratio of the sum of the areas of the black sections to the sum of the areas of the white sections

$$\frac{x}{y}$$

The x -coordinate of the vertex at the right angle of the triangle

The y -coordinate of the vertex at the right angle of the triangle

The probability that A or B or both will occur tomorrow

0.92

$$\frac{2^{27}-2^{24}}{8^{27}-8^{26}}$$

$$2^{-54}$$

25000 +道题目

3本备考书籍