Đề thi Olympic Tiếng Anh lớp 11 vòng 2 năm 2013 - 2014

Câu 1:

In a certain carnival game a player gets to spin each of the spinners once. What is the probability of getting two numbers that have a sum of 7?

Câu 2:

The graph of the equation x² + y² = 4 can be described as a        

Câu 3:

When solved graphically, which system of equations will have exactly one point of intersection?

Câu 4:

Which expression is equivalent to cos150°?

Câu 5:

The table and scatterplot below display the calories and water-content percentages for a variety of fruits. Which value is the best estimate for the correlation coefficient?

Câu 6:

Which is an irrational number?

Câu 7:

What is the sum of 5√7 and 3√28?

Câu 8:

Points X, Y and Z are collinear. Y is the midpoint of XZ. The coordinates of point X are (4, 3). The coordinates of point Y are (–1, 2). What is the coordinates of point Z?

Câu 9:

At a particular company, every employee receives a 4% cost-of-living increase to their salary. What impact does this cost-of-living increase have on the mean and on the range of employee salaries at the company?

Câu 10:

Given line PM, the drawing shows the beginning steps of a geometric construction. Which construction is shown?