Month: December 2017

Last Updated on May 11, 2023 GMAT OFFICIAL GUIDE DS Solution: We are given that a is a 3-digit integer and b is a 3-digit integer and need to …

Last Updated on May 11, 2023 GMAT OFFICIAL GUIDE DS Solution: We are given the ratio: blue : yellow : red = 2x : 3x : x We need …

Last Updated on May 11, 2023 GMAT OFFICIAL GUIDE PS Solution: We can create the following equation: Total houses = number with air conditioning + number with sunporch + …

Last Updated on May 11, 2023 GMAT OFFICIAL GUIDE PS The figure shown above consists of a shaded 9-sided polygon and 9 unshaded isosceles triangles… Solution: Since we have …

Last Updated on May 11, 2023 GMAT OFFICIAL GUIDE PS Solution: We need to determine the number of ways to lineup male, female, male, female, male, female. Since there …

Last Updated on May 11, 2023 Solution: We are looking for two consecutive times (when the door opened) with a gap of more than 15 minutes, since only then …

Last Updated on May 11, 2023 GMAT OFFICIAL GUIDE PS Solution: Let’s review two rules for the standard deviation: 1. Adding a constant to each value in a data …

Last Updated on May 11, 2023 GMAT OFFICIAL GUIDE PS Solution: Since the order of the books in her list matters, we use permutation. Thus, the number of ways …