GMAT - Problem solving (Giải quyết vấn đề) (Thi FPT)

SECTION 1 30 Minutes (20 Questions) 1. The 180 students in a group are to be seated in rows so that there is an equal number of students in each row. Each of the following could be the number of rows EXCEPT (A) 4 (B) 20 (C) 30 (D) 40 (E) 90 2. A parking garage rents parking spaces for $10 per week or $30 per month. How much does a person save in a year by renting by the month rather than by the week? (A) $140 (B) $160 (C) $220 (D) $240 (E) $260 3. (A) 24 (B) 27 (C) 39 (D) 51 (E) 219 4. Of the following, which is the best approximation to 0.0026 ? (A) 0.05 (B) 0.06 (C) 0.16 (D) 0.5 (E) 0.6 5. At a certain diner, a hamburger and coleslaw cost $3.59, and a hamburger and french fries cost $4.40. If french fries cost twice as much as coleslaw, how much do french fries cost? (A) $0.30 (B) $0.45 (C) $0.60 (D) $0.75 (E) $0.90 6. If ∠XYZ in the figure above is a right angle, what is the value of x? (A) 155 (B) 145 (C) 135 (D) 125 (E) 110 c b a       7. In the expression above, a, b, and c are different numbers and each is one of the numbers 2, 3, or 5. What is the least possible value of the expression? (A) 30 1 (B) 15 2 (C) 6 1 (D) 10 3 (E) 6 5 8. A certain culture of bacteria quadruples every hour. If a container with these bacteria was half full at 10:00 a.m., at what time was it one-eighth full? (A) 9:00 a.m. (B) 7:00 a.m. (C) 6:00 a.m