GMAT - Math Section T09 (Ôn thi FPT)

Math Section ------------------------------------------------------------------------------------------------------------ Q1: What is 35 percent of the sum of 1.4 and 5 1 ? A. 0.42 B. 0.56 C. 0.85 D. 1.55 E. 1.95 Answer: ------------------------------------------------------------------------------------------------------------ Q2: A certain characteristic in a large population has a distribution that is symmetric about the mean m. If 68 percent of the distribution lies within one standard deviation d of the mean, what percent of the distribution is less than m +d ? A. 16% B. 32% C. 48% D. 84% E. 92% Answer: ------------------------------------------------------------------------------------------------------------ Q3: If the units digit of the three-digit positive integer k is nonzero, what is the tens digit of k? (1) The tens digit of k + 9 is 3. (2) The tens digit of k + 4 is 2. A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient. Answer: ------------------------------------------------------------------------------------------------------------ Q4: If the average (arithmetic mean) of positive integers x, y, and z is 10, what is the greatest possible value of z ? A. 8 B. 10