By dzyubam
- **May 1**, 02:00 AM

Math (DS)
15 computers in the corporate network are infected with virus. If every day several computers are arbitrarily selected for scanning, what is the probability that no computer containing virus will be scanned in the course of the next five days?
1. 10 computers are scanned...

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By dzyubam
- **Apr 30**, 02:00 AM

Math (DS)
Among the first ten cyclists who crossed the finish-line, 4 were Italians and 8 represented Telefonica team. How many cyclists who represented Telefonica team and finished in the top ten were not Italians?
1. 2 Italians who finished in the top ten did not represent...

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By dzyubam
- **Apr 27**, 02:00 AM

Math (DS)
Is positive?
1. is positive for all
2. is positive for all
Question Discussion & Explanation
Correct Answer - A - (click and drag your mouse to see the answer)
GMAT Daily Deals
e-GMAT: 36 hours of live instruction on GMAT Verbal along with online...

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By dzyubam
- **Apr 24**, 02:00 AM

Math (DS)
If is a positive integer, is the number of its divisors smaller than ?
is defined as the smallest integer that is not less than .
1. is not a square of an integer
2. ...

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By Magoosh
- **Apr 23**, 09:00 AM

Magoosh's very own Mike McGarry, GMAT/Math Teacher/Tutor/Foosball player extraordinaire, went through 5 different sets of Official GMAT Practice Material and tallied questions based on the subject material they tested.
Here are the samples of Official Material he used:
1.GMAT Official Guide (12th Edition) Problem Solving Practice Questions...

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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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