Đề thi Olympic Tiếng Anh lớp 11 vòng 21 năm 2013 - 2014

Which does not represent y as a function of x?

Jessica deposits $300 into a savings account that pays an annual interest rate of 2%, compounded twice a year. How much money will Jessica have in her account at the end of one year?

If x # y is defined for all integers by the equation above, and if x # y is 7, what is a possible value of x?

The expression 11/(√3 - 5) is equivalent to

Which expression is equivalent to 2x(x² + 9) – 2x?

The data above represents the scores for a soccer team in seven games. Which measure of central tendency best represents the overall performance of the soccer team, and why?

Look at the recursive formula. What are the first 4 terms of this sequence?

How many positive integers less than 60 have no prime factors in common with 60? (Note that 1 is not a prime number.)

Let f(x) = 4x - 8 and let g(x) = 5x + 1. Find f^-1(g^-1(1)).