By Magoosh
- Apr 2, 09:00 AM
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...
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By dzyubam
- Apr 2, 02:00 AM
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...
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By dzyubam
- Mar 30, 02:00 AM
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)...
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By dzyubam
- Mar 29, 02:00 AM
Math (DS)
What percent of the MIS students enrolled at Wisconsin University are female?
1. 5% of female students at Wisconsin University are studying MIS.
2. 12% of male students at Wisconsin University are studying MIS.
Question Discussion & Explanation
Correct Answer - E - (click and drag your mouse...
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By Magoosh
- Mar 28, 09:00 AM
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...
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By dzyubam
- Mar 28, 02:00 AM
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...
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By dzyubam
- Mar 27, 02:00 AM
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...
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By dzyubam
- Mar 26, 02:00 AM
Math (DS)
and are positive integers and . What is the value of ?
1.
2. is a prime number
Question Discussion & Explanation
Correct Answer - C - (click and drag your mouse to see the answer)
GMAT Daily Deals
Knewton GMAT: Highly qualified instructors....
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By dzyubam
- Mar 23, 02:00 AM
Math (DS)
When is divided by 5, the remainder is 2. Is divisible by 7?
1. is a prime number
2. is a multiple of 10
Question Discussion & Explanation
Correct Answer - E - (click and drag your mouse...
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By dzyubam
- Mar 22, 02:00 AM
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...
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