GMAT Section 2 Quantitative

GMAT Section 2 Quantitative practice questions, page 16 of 29, with answer review and explanations.

Question 76

If a cube has a volume of 64 cubic feet, what is its lateral area?

  1. 16
  2. 24
  3. 48
  4. 64
  5. 96

Question 77

A seven-digit combination lock on a safe has zero exactly three times, does not have the digit 1 at all. What is the probability that exactly 3 of its digits are odd?

  1. 9/16
  2. 1/2
  3. 1/3
  4. 1/4
  5. 1/6

Question 78

Pipe A fills a swimming pool in 4 hours. Pipe B empties the pool in 6 hours. If pipe A was opened at 8:00 am and Pipe B at 9:00 am, at what time will the pool be full?

  1. 15:00
  2. 17:00
  3. 18:00
  4. 19:00
  5. 20:00

Question 79

In a school with 5 classes, each class has 2 students less then the previous class. How many students are there in the largest class if the total number of students at school is 95?

  1. 17
  2. 19
  3. 21
  4. 23
  5. 25

Question 80

A 48 gallon solution of salt and water is 10% salt. How many gallons of water must be added to the solution in order to decrease the salt to 8% of the volume?

  1. 8
  2. 12
  3. 13
  4. 14
  5. 16