By dzyubam
- **Apr 23**, 02:00 AM

Math (DS)
In a certain office 25% of the computers are equipped with built-in modems and infra-red ports. What percentage of the computers are not equipped with either of these devices?
1. Half of the computers that are equipped with built-in modems do not have infra-red ports
2....

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By dzyubam
- **Apr 20**, 02:00 AM

Math (DS)
Is ?
1.
Question Discussion & Explanation
Correct Answer - C - (click and drag your mouse to see the answer)
GMAT Daily Deals
e-GMAT: Up to 37% off the world’s first prep course designed to help non-natives score higher on GMAT Verbal. Learn...

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By Magoosh
- **Apr 19**, 09:00 AM

Know the fundamentals
To do well on the GMAT quant, you can’t guess your way through, relying on techniques such as process of elimination or approximation. At a certain point you have to know the properties of a right triangle or the difference between dependent and...

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By Magoosh
- **Apr 16**, 09:00 AM

Fact: one of the most tested categories of concepts on the GMAT Quantitative section is Integer Properties
What are the “properties of integers”?
Probably none of these are brand new to you —- in fact, you probably learned about all these in grade school. Here’s a list.
a) factors and...

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By dzyubam
- **Apr 16**, 02:00 AM

Math (DS)
In the morning, John drove to his mother's house in the village at an average speed of 60 kmh. When he was going back to town in the evening, he drove more cautiously and his speed was lower. If John went the same distance...

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By dzyubam
- **Apr 13**, 02:00 AM

Math (DS)
The bowl contains green and blue chips. What is the probability of drawing a blue chip in two successive trials if the chip drawn in the first trial is not returned to the bowl before the second trial?
1. The ratio of blue chips to...

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By dzyubam
- **Apr 10**, 02:00 AM

Math (DS)
Set consists of odd integers divisible by 5. Is standard deviation of positive?
1. All members of are positive
2. consists of only one member
Question Discussion & Explanation
Correct Answer - B - (click and drag your mouse to see the answer)
GMAT Daily...

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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
- **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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