Đề thi Olympic Tiếng Anh lớp 11 vòng 15 năm 2013 - 2014

What is the order of these numbers from least to greatest?

The accompanying diagram shows the construction of a model of an elliptical orbit of a planet traveling around a star. Point P and the center of the star represent the foci of the orbit. Which equation could represent the relation shown? 

The sum of the perimeters of two different squares is 32 centimeters, and the difference between their perimeters is 8 centimeters. If x represents the side length of the larger square and y represents the side length of the smaller square, which of the following systems of equations could be used to find the dimensions of the squares?

Margaret is wrapping a box. The box is a rectangular prism 18 inches long, 12 inches wide, and 9 inches high. What is the surface area of the box?

A support cable for a bridge is attached to a tower 60 feet above the roadway. The cable is also attached to the bridge 50 feet from the tower as shown above. Which is the closest to the length of the support cable (x)?

Which scatter diagram shows the strongest positive correlation?

The expression 7/(3-√2) is equivalent to

The equations above describe

The table above shows a relationship between the values of x and y. Which equation describes the relationship?

Which graph is the solution set to the compound inequality above?