By Magoosh
- **Apr 25**, 09:00 AM

The topic of decimals, and patterns of decimals, seems to be of slightly greater interest to GMAC in the GMAT OG13e than in previous editions. What decimals terminate? What decimals repeat? In this post, we'll take a look at these questions.
Rational Numbers
Integers are positive and...

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By dzyubam
- **Apr 25**, 02:00 AM

Math (PS)
What is the unit's digit of ?
(A) 1
(B) 3
(C) 5
(D) 7
(E) 9
Question Discussion & Explanation
Correct Answer - E - (click and drag your mouse to see the answer)
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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 Magoosh
- **Apr 20**, 09:00 AM

The GMAT quantitative section asks, among other things, about geometry. One of the GMAT's favorite figures is the isosceles triangle. An isosceles triangle is one that has two congruent sides. Knowing simply that about a triangle has profound implications for answer GMAT Problem Solving & Data Sufficiency...

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

Math (DS)
Is ?
1.
2.
Question Discussion & Explanation
Correct Answer - C - (click and drag your mouse to see the answer)
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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 dzyubam
- **Apr 19**, 02:00 AM

Math (PS)
Which of the following is closest to ?
(A) 0.50
(B) 0.89
(C) 0.98
(D) 1.02
(E) 1.05
Question Discussion & Explanation
Correct Answer - C - (click and drag your mouse to see the answer)
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By dzyubam
- **Apr 18**, 02:00 AM

Math (PS)
If function satisfies for all , which of the following must be true?
(A)
(B)
(C)
(D)
(E)
Question Discussion & Explanation
Correct Answer - B - (click and drag your mouse to see the answer)
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