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...

Read More

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...

Read More

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...

Read More

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...

Read More

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....

Read More

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...

Read More

By Knewton
- **Mar 21**, 14:35 PM

By Jen Rugani
In the Nintendo game Super Mario Bros., Mario uses green warp pipes to travel around the world. Even though some of these pipes don’t lead anywhere, savvy players know that it’s wise to try to enter every single one, because every so often,...

Read More

By Magoosh
- **Mar 20**, 09:00 AM

Many of our students requested that we record video explanations for the math questions ("Sample Questions") from the GMAT Official Guide, both Data Sufficiency and Problem Solving, and we were happy to help!
Here's the link to the videos, be sure to bookmark it and refer...

Read More

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

Math (DS)
Set consists of a certain number of even integers divisible by 3. Is standard deviation of positive?
1. All elements of set are positive
2. The range of set is 0
Question Discussion & Explanation
Correct Answer - B - (click and drag your...

Read More

By dzyubam
- **Mar 19**, 02:00 AM

Math (DS)
If sets and are united into a single set, will the mean of this set be smaller than the sum of means of sets and ?
1. and are one-element sets
2. Neither set nor set contains negative...

Read More