Math (PS) If , , , and , what is the value of (A) 10 (B) 15 (C) 20 (D) 25 (E) 30 Question Discussion & Explanation Correct Answer - C - (click and drag your mouse to see the answer) GMAT Daily Deals Veritas Prep: admissions consultants from all...

Math (PS) If , where and are integers and , what is the value of ? (A) 0 (B) 1 (C) 2 (D) 3 (E) 4 Question Discussion & Explanation Correct Answer - A - (click and drag your mouse to see the answer) GMAT Daily Deals MBA Admission Strategy...

Math (PS) 4% of population of country L has military experience and supports a war against Country G. If 20% of those who support the war have no military experience what percentage of the country’s population actually supports war against G? (A) 5% (B) 7.5% (C) 10% (D) 12.5% (E) 15% Question...

Advanced copies of the 13th edition of the GMAT Official Guide (turquoise cover) have been released. Changes in Problems Used The vast majority of the math questions in the 12th edition Official Guide appear verbatim but in a different order, than in the 13th edition.  Here’s a...

Math (PS) There are 6 cards numbered from 1 to 6. They are placed into a box, and then one is drawn and put back and then another card is drawn and put back. What is the probability that one of the cards was 5 if...

Math (PS) Robert can eat a 20 kg. bag of potatoes in 10 days. He and his wife Jane can eat the same bag in 7 days. How many days does it take Jane to eat a 20 kg. bag of potatoes by herself? (A) (B) (C)...

This is, among other things, a case study of one of the harder Data Sufficiency problems in the OG.   Percents as Multipliers You can find several good tips on percent problems at this post.  The most relevant here is the idea of a percent as multiplier.  To change...

Math (PS) Two trains continuously travel between Washington DC and Baltimore, which is 120 miles away. They start simultaneously, train A at Washington and train B at Baltimore, and run at 30 and 90 mph respectively. The station turnaround times are negligible. What is the distance...

Math (PS) Foodmart customers regularly buy at least one of the following products: milk, chicken, or apples. 60% of shoppers buy milk, 50% buy chicken, and 35% buy apples. If 10% of the customers buy all 3 products, what percentage of Foodmart customers purchase exactly 2...

Math (PS) A 4 cm cube is cut into 1 cm cubes. What is the percentage increase in the surface area after such cutting? (A) 4% (B) 166% (C) 266% (D) 300% (E) 400% OA and Explanation Question Discussion & Explanation Correct Answer - D - (click and drag your mouse to see the...