Andrew Geller

Andrew Geller is a top GMAT tutor based out of New York City. Throughout his career he has successfully taught people from many different backgrounds, countries, and starting scores.

The number line shown contains three points R, S, and T, whose coordinates have absolute values r, s, and t, respectively. Which of the following equals the average (arithmetic mean) of the coordinates of the points R, S, and T?

The number line shown contains three points R, S, and T, whose coordinates have absolute values r, s, and t, respectively. Which of the following equals the average (arithmetic mean) of the coordinates of the points R, S, and T? A. s B. s+t-r C. (r-s-t)/3 D. (r+s+t)/3 E. (s+t-r)/3 Correct Answer: E Full explanation coming soon. Send us a note if you’d like […]

The number line shown contains three points R, S, and T, whose coordinates have absolute values r, s, and t, respectively. Which of the following equals the average (arithmetic mean) of the coordinates of the points R, S, and T? Read the Full Article »

If X is the hundredths digit in the decimal 0.1X and if Y is the thousandths digit in the decimal 0.02Y, where X and Y are nonzero digits, which of the following is closest to the greatest possible value of (0.1X)/(0.02Y)?

If X is the hundredths digit in the decimal 0.1X and if Y is the thousandths digit in the decimal 0.02Y, where X and Y are nonzero digits, which of the following is closest to the greatest possible value of (0.1X)/(0.02Y)? A. 4 B. 5 C. 6 D. 9 E. 10 Correct Answer: D Full explanation coming soon. Send us a note if

If X is the hundredths digit in the decimal 0.1X and if Y is the thousandths digit in the decimal 0.02Y, where X and Y are nonzero digits, which of the following is closest to the greatest possible value of (0.1X)/(0.02Y)? Read the Full Article »

If m and p are positive integers and m² + p² < 100, what is the greatest possible value of mp?

If m and p are positive integers and m² + p² < 100, what is the greatest possible value of mp? A. 36 B. 42 C. 48 D. 49 E. 51 Correct Answer: D Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons of practice questions, explanations for GMAT Official Guide questions, and

If m and p are positive integers and m² + p² < 100, what is the greatest possible value of mp? Read the Full Article »