- What Unit Conversions Should You Know For The GRE?
- Breakdown of the Most Commonly Tested GRE Quant Concepts
- GRE Division, Mixed Numerals, and Negatives
- GRE Math: Direct Proportions
- Inverse Proportions on the GRE: The Flip It Method
- Quantitative Comparison and Manipulation
- GRE Word Problem Trap #1: “Cannot be determined…”
- GRE Exponents: Practice Question Set
- GRE Math: Inequalities
- Strange Symbols in GRE Math Operations
- Systems of Equations on the GRE
- GRE Quantitative Comparison Tip #3 – Logic over Algebra
- Numeric Entry Practice Question of the Week #21 Answer
- GRE Quantitative Comparison Tip #1 – Dealing with Variables
- Numeric Entry Practice Question of the Week #21
- GRE Math Strategies – When to Plug-In
- Part II: Does Plugging in Work on GRE Quantitative Comparison?
- Part I : The Power of Plugging In – GRE Math Techniques

**Algebra**

- Magoosh Brain Twister: Flipping Out – Explanation
- Magoosh Brain Twister: Flipping Out
- Does Order Matter? Combinations vs. the Fundamental Counting Principle on the GRE
- “Chelsea – it’s time for a Kindle” Challenge Question
- GRE Multiple Answer Challenge Question: Astronauts
- GRE Math Multi-subject Challenge Question
- Breakdown of the Most Commonly Tested GRE Quant Concepts
- GRE Counting and Probability: Practice Question of the Week #39
- GRE Permutations: Practice Question of the Week #37 Answer
- GRE Permutations: Practice Question of the Week #37
- GRE Probability: Practice Question of the Week #33
- The Difficulty of Context: Combinations and Permutations Questions
- Three GRE Challenge Combinations and Permutations Problems
- Combinations Practice Question of the Week #27 Answer
- Combinations Practice Question of the Week #27
- Real-Life GRE Math: Foosball Combinations
- Combinations and Permutations Practice Questions and Video Explanations
- GRE Math: Combinations and Permutations
- GRE Combinations and Non-combinations Part II
- GRE Combinations and…Non-combinations
- Permutations and Combinations: Practice Question of the Week #13 Answer
- Permutations and Combinations: Practice Question of the Week #13
- Combinations: Practice Question of the Week #5 Answer!
- Combinations: Practice Question of the Week #5
- Prime Numbers and Probability – GRE Math Problem
- GRE Math – Do You Know the Difference Between Combinations and Permutations?
- Revised GRE Math Question Re-spin — The Best Way to Get Ready for the New GRE!
- More From the Multiple Answer Questions on the Revised GRE – Challenge Question
- Think You Can Handle GRE Combinations and Permutations?
- Do Permutations Make Your Head Spin?

**Combinations and Permutations**

- How Many Data Interpretation Questions on the GRE?
- GRE Math: Histograms
- Boxplots on the GRE
- Breakdown of the Most Commonly Tested GRE Quant Concepts
- Best Fit Lines in GRE Data Interpretation
- GRE Data Interpretation Practice Questions: Pie Chart and Bar Chart
- The Basics of Data Interpretation on the GRE
- GRE Data Interpretation Strategies
- Data Interpretation: Practice Question of the Week #8
- Save Time on GRE Math — The Power of Approximation

**Data Interpretation**

- Advanced Math: GRE Geometry Challenge Question
- GRE Coordinate Geometry Shortcut: No Graphs!
- GRE Geometry Formulas
- Will there be Parabolas on the GRE?
- GRE Coordinate Geometry Practice Question of the Week #35 Answer
- GRE Coordinate Geometry Practice Question of the Week #35
- GRE Math Formulas: How to (Not) Use Them
- New GRE Numeric Entry: Practice Question of the Week #11

**Coordinate Geometry**

- Magoosh Brain Twister: The Smallest Big Change – Explanation
- Magoosh Brain Twister: The Smallest Big Change
- Magoosh Brain Twister: Zeroing In on the Answer
- GRE Math – Exponent Challenge
- GRE Quant: The Difference of Squares
- GRE Exponents: Practice Question Set
- GRE Math Basics: Quick Tips
- GRE Math Multiple Choice Practice Question of the Week #23
- GRE Math Video Lessons: Exponents
- Numeric Entry Practice Question of the Week #21 Answer
- Numeric Entry Practice Question of the Week #21
- Math Basics: Exponents
- GRE Math Basics – Exponents
- Exasperating Exponents
- Advanced Exponents–Problem Solving

**Exponents**

- Mean, Median and Mode on the GRE
- Two Definitions of Exterior Angle in GRE Geometry
- GRE Math: Rounding
- Positive and Negative Square Roots on the GRE
- Breakdown of the Most Commonly Tested GRE Quant Concepts
- GRE Division, Mixed Numerals, and Negatives
- GRE Quant: The Difference of Squares
- Proportions on the GRE
- GRE Math: Ratios
- GRE Math: Absolute Values
- GRE Math Basics: Quick Tips
- GRE Math Video Lessons: Series and Counting Basics
- GRE Math: Combinations and Permutations
- [Video] GRE Math Tip: Converting Fractions to/from Percents
- Math Basics: Exponents
- GRE Math – Essential Tips For Factoring
- Math Basics – Distance, Rate and Time
- GRE Math Basics – Exponents
- Math Basics — Least Common Multiple

**Math Basics**

- FAQ: Should I Study Probability?
- Magoosh Brain Twister: Flipping Out – Explanation
- Magoosh Brain Twister: Flipping Out
- Magoosh Brain Twister – Probability with a High Chance of Turbulence
- How Many Probability Questions are on the GRE?
- GRE Math Multi-subject Challenge Question
- Breakdown of the Most Commonly Tested GRE Quant Concepts
- GRE Counting and Probability: Practice Question of the Week #39 Answer
- GRE Counting and Probability: Practice Question of the Week #39
- GRE Probability: Practice Question of the Week #33 Answer
- Strategies for Difficult GRE Questions
- Rules and Counting Techniques for Probability on the GRE
- GRE Probability Questions: Using the Elimination Strategy
- GRE Probability Questions
- Prime Numbers and Probability – GRE Math Problem
- GRE Math — The Probability of a Coin Toss
- Probability Workshop — Part I

**Probability**

- How Many Rate Questions on the GRE?
- Distance Rate Time Formula Memorization Shortcut
- Breakdown of the Most Commonly Tested GRE Quant Concepts
- Compound Interest vs. Simple Interest on the GRE
- Math Basics – Distance, Rate and Time
- GRE Math Strategies – When to Plug-In
- GRE Math — Do Rates Freak You Out?

**Rate Problems**

- How Many Statistics Questions are on the GRE?
- Breakdown of the Most Commonly Tested GRE Quant Concepts
- GRE Math: Percentiles and Quartiles
- Standard Deviation on the New GRE
- GRE Quartiles and the Interquartile Range
- Normal Distribution on the GRE
- GRE Math Shortcut: Statistics
- GRE Statistics
- GRE Statistics: Conceptualizing Weighted Averages
- Statistics Practice Question of the Week #17 Answer
- Statistics Practice Question of the Week #17
- Math Strategies: Averages Are Rarely Average in Difficulty
- GRE Math – Mean and Median (Sorry Mode, You Weren’t Invited)
- Do You Know Enough Statistics to Get by on the GRE?

**Statistics**

- GRE Math Multi-subject Challenge Question
- Breakdown of the Most Commonly Tested GRE Quant Concepts
- GRE Word Problem Trap #1: “Cannot be determined…”
- GRE Math Work Rate: Practice Question of the Week #29
- Combinations Practice Question of the Week #27
- Don’t Despair – Strategies for Dealing with Convoluted Word Problems

**Word Problems**

- GRE Multiple Answer Challenge Question: Astronauts
- How to Approach Complicated Math Problems
- GRE Perfect Math Score Challenge
- Revised GRE Math Practice Questions: Explanations!
- Revised GRE Math Practice Questions
- New GRE Multiple Answer Question: Practice Question of the Week #9 Answer!
- New GRE Multiple Answer Question: Practice Question of the Week #9
- GRE Math – Difficult Multiple-Answer Questions
- More From the Multiple Answer Questions on the Revised GRE – Challenge Question
- Ready for a New Question Type on the Revised GRE?
- The Revised GRE– What’s New on the Math Front?

**Math MAQs: Multiple Answer Questions**

- GRE Parallelogram Challenge Question
- GRE Math Challenge – Numeric Entry
- GRE Numeric Entry Questions
- How to Approach Complicated Math Problems
- GRE Perfect Math Score Challenge
- Revised GRE Math Practice Questions: Explanations!
- Revised GRE Math Practice Questions
- Numeric Entry Practice Question of the Week #21 Answer
- Numeric Entry Practice Question of the Week #21
- Statistics Practice Question of the Week #17 Answer
- Statistics Practice Question of the Week #17
- New GRE Numeric Entry: Practice Question of the Week #11 Answer
- New GRE Numeric Entry: Practice Question of the Week #11
- New GRE Question Type — The Empty Box (aka Numeric Entry)
- The Revised GRE– What’s New on the Math Front?

**Numeric Entry**

- Magoosh Brain Twister: Get Your Factorials Straight!
- Mean, Median and Mode on the GRE
- GRE Math: Solving Quantitative Comparisons
- QC “Who Cut the Cheese” GRE Challenge Question
- How to Approach Complicated Math Problems
- Quantitative Comparison Pacing Drill
- Positive and Negative Square Roots on the GRE
- GRE Math: Percentiles and Quartiles
- Quantitative Comparison: “The Relationship Cannot Be Determined from the Information Given” Answer Choice
- GRE Perfect Math Score Challenge
- GRE Quantitative Comparison: The Devil is in the Details
- Common GRE Math Mistakes
- Revised GRE Math Practice Questions: Explanations!
- Revised GRE Math Practice Questions
- GRE Math Quiz: Blog Concepts Review
- GRE Quantitative Comparison Tip #5 – Estimation with a Twist
- GRE Quantitative Comparison Tip #4 – Comparing in Parts
- GRE Quantitative Comparison Tip #3 – Logic over Algebra
- GRE Quantitative Comparison Tip #2: Striving for Equality
- GRE Quantitative Comparison Tip #1 – Dealing with Variables
- Geometry Quantitative Comparison Practice Question of the Week #15 Answer
- Geometry Quantitative Comparison: Practice Question of the Week #15
- Quantitative Comparison: Practice Question of the Week #4 Answer!
- Quantitative Comparison: Practice Question of the Week #4
- Quantitative Comparison – Common Traps
- Quantitative Comparison Traps
- Part II: Does Plugging in Work on GRE Quantitative Comparison?
- The Revised GRE– What’s New on the Math Front?
- Part 2 — QC with huge numbers
- Quantitative Comparison (QC)- Huge Numbers

**QC: Quantitative Comparison**

- Quantitative Comparison and Manipulation
- GRE Quantitative Comparison Tip #2: Striving for Equality
- GRE Quantitative Comparison Tip #1 – Dealing with Variables
- GRE Math Review Quiz: Plugging In
- GRE Math Strategies – When to Plug-In
- Part II: Does Plugging in Work on GRE Quantitative Comparison?
- Part I : The Power of Plugging In – GRE Math Techniques
- New GRE Question Type — The Empty Box (aka Numeric Entry)
- GRE Math Strategies Part II of VI: Plug In (Substitution) Method

**Plugging In**

Hi

I have gone through all the 6 books of Manhattan GRE for Quant. there are certain questions in my mind:

1. can i totally rely on these six books for quant concepts or is there any topic of GRE quant which has not been covered in this book.

2. secondly is the information provided in these books sufficient to get a good GRE score..for e.g. in statistics they have covered mainly average n median . will this be enough to crack the statistics question in actual GRE.

3. can you please tell me some book other than Manhattan GRE to practice the quant section.

basically i have been good in mathematics right from my school days so i dont want to take a chance in quant.

Thanks

Navdeep

Hi Navdeep,

1. Make sure you take the tests as well. There are some oddball concepts, such as parabolas, that are not covered in the book.

2. The info. is def. sufficient to get a good score. The math on the GRE isn’t advanced. The questions are just tricky :).

3. Magoosh (that’s us!) also have very tough quant questions, and unlike many books out there, we cover virtually everything you could expect to see test day.

Hope that helps!

There is a question on optimizing the inequalities in Manhattan GRE which goes like this:

if -4<= m<= 7 and -3<n<10, what is the maximum possible integer value of m-n?

the solution is like this, they have drawn a table in which LT=less than and GT=Greater than , min and max represent the minimum and maximum value of variable and the table goes like this:

m n m-n

Min -4 Min GT(-3) -4-GT(-3)= LT(-1)

Min -4 Max LT10 -4-LT10=GT(-14)

Max 7 Min GT(-3) 7-GT(-3)=LT10

Max 7 Max LT10 7-LT10=GT(-3)

the answer is third row….now i want to know is that how are they converting GT to LT and LT to GT during subtraction (row 1, 2, 3,4) . or is there any better way of solving questions on optimization of inequalities….

the table is not clear so let me re draw it for u

m n m-n

Min -4 Min GT(-3) -4-GT(-3)= LT(-1)

Min -4 Max LT10 -4-LT10=GT(-14)

Max 7 Min GT(-3) 7-GT(-3)=LT10

Max 7 Max LT10 7-LT10=GT(-3)

the spacing in the table changes every time i submit it let me tell u if it is clear to u or not…other wise its on page 92 of book 1 on algebra….

Please need help with this question.

The quantities S and T are positive and are related by the equation S = k/T, where k is a constant. If the value of S increases by 50 percent, then the value of T decreases by what percent?

Other choices: 25%, 50%, 66 2/3%, 75%

Answer is 33 1/3% but I can’t seem to get it. I appreciate any help. Thanks.

John

Nevermind just figured it out. I substitued values then used the formula difference in change divided by original value for T.

S=10 then k=20 and T is 2. So 50% more is S=15, k is still 20, then T is 1.333.

2 – 1.333 = .666/2 = .333 X 100 = 33 1/3%

Great! That is the answer :).

Hi

i want to buy Manhattan Prep GRE Set..there is third edition of these books available on amazon from 3rd july 2012. so should i buy the new (third) edition or the second Edition

Thanks

Navdeep,

Besides the covers nothing has really changed. I’ll be coming out with a full-length book review soon. That said, go ahead and buy the 2nd Edition :).

Chris

Thanks a lot for the help …..:)

You are welcome!

Hey Chris,

I was going through the Magoosh GRE ebook and came across the example of solving for the third side of a triangle.

I see that the pdf suggests if x>0 and 2 sides of a certain triangle have lengths 2x+1 and 3x+4 ,then which of the following could be the third side of the triangle?

The answer marked in the PDF is 4x+5,6x+1 and 2x+17.

However according to me the answer is only 4x+5.

6x+1 cannot be valid since if x=5,6x+1=31 while 5x+5(sum of two other sides)=30. The third side should have a length lesser than the sum of the other two.

2x+17 cannot be valid because at x=1,2x+17=19 while 5x+5(sum of two other sides)=10.

The third side should have a length lesser than the sum of the other two.

Correct me if I’m wrong.

Hi,

I had given my GRE last year and am planning to give it again next month, my score was 304(151 V+ 153 Q), do you think this product would help be increase my score substantially. If yes please suggest a suitable plan for me.

Hi Deepankar,

Magoosh’s GRE product can definitely help you boost your score substantially. Even if you prepped a lot before, I’m confident Magoosh can increase your score a lot. For a suitable study plan, here are a few, one of which should work best for you:

http://magoosh.com/gre/gre-study-guides-and-plans/

Hope that helps :).

Hi,

I was doing a practice question from Princeton Review and did not understand their explanation to the solution for the following problem.

An elected official wants to take five members of his staff to an undisclosed secure location. What is the minimum number of staff members the elected official must have in order to have at least 20 different groups from which to choose?

The answer choices are: 7, 8, 9, and 10.

The correct answer is 7.

If you could explain to me how to solve this problem, it would be greatly appreciated!

Thanks,

Ainee

Sure, no problem :).

This question is a combinations question – we are choosing from a group. We don’t know the total number of people in this group, but we do know the number being chosen to head to the (very suspect sounding) undisclosed location: 5.

Using the combinations formula: x!/ 5!(x-5)! > (or equal to) 20

Next, we work with the answer choices. If you’ve played around with combinations before, you’ll see that 10 is going to give you a pretty large number. Anyhow, when working with combinations we should start with the lowest number because it’s easiest to do the math: 7!/5!2! = 21.

All the other numbers, when plugged in, will give you a larger number. So 7 (which gives you 21) is the least number satisfying the question.

Hope that helps :).

Thanks! That explanation was a lot better than what Princeton had!

You’re welcome!

Hi Chris,

Could you please tell me, how to contact the teachers on Magoosh GRE? I had some doubt on Quantitative section, but i cant find any way to contact them to ask questions.

Regards

karthika

Hi, Karthika

You can send us any questions through the Help tab– the small black rectangle on the left of your screen whenever you’re logged into Magoosh (the dashboard, practice questions, lesson videos, etc.). Let us know if that’s not working for you for any reason and we’ll e-mail you directly.

Best,

Margarette

Hi!

what’s the cost of GRE math in Indian currency? Do you provide the study material in New Delhi? How will I get it by post or in soft copy …?

Regards

Priyanka

Hi, Priyanka

Our GRE Math program is offered as an online study tool, so you can access it from any computer with an internet connection. Currently, we’re having a sale and the price is $54 (US dollars), and you can purchase through this page by entering your credit card information: http://gre.magoosh.com/plans. I hope that helps, feel free to let us know if you have any additional questions!

Best,

Margarette

Does new revised GRE contain a calculus portion?

Hi, Ajay

Nope, no need to worry– the GRE does not test any calculus material.

Best,

Margarette

May I ask a question about GRE math here? I am from the Himalayan country Nepal.

Hi, Ajit

Of course, feel free to ask about anything!

Best,

Margarette

No i dont have a tutor and good tutors really change things.

Looking forward to Magoosh product, given that i do go above 750.

Hi

I have always been extremely bad in maths, I took GRE on July 5 and could only score 540 in maths.

Even if i get 620 or above in maths it would be a big success for me but wont help me in admission as the institute i want to go to require AT LEAST 750, higher than that would be preferred.

How do i practice to be excellent from a failure in maths and not just good.

Also what is the sign after practicing that i am actually ready for test and would be able to take 750 at least?

Badly need guidance and advice

Thanks

Ayesha,

Do you have a tutor? An excellent math tutor can make a difference. I’ve helped students go from 500 to 700 on Quant. It is possible.

And don’t forget there is also the Magoosh product. We offer just math questions and videos – hundreds of hours worth – for an excellent price.