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My review of 2021 GMAT Official Guide Quantitative Review

1) GMAT Official Guide Quantitative Review 2021 has been released in ebook format and can be purchased from: https://www.efficientlearning.com/gmat/ 2) The physical copy of the GMAT Official Guide Quantitative Review 2021 will be available on Amazon and other retailers starting 3rd June 2020. 3)Thi...

by dabral

Tue May 05, 2020 10:34 am
Forum: GMAT Strategy
Topic: My review of 2021 GMAT Official Guide Quantitative Review
Replies: 1
Views: 451

Free video explanations: 2021 GMAT Official Guide

I just published video explanations to all of the 550 quantitative reasoning questions in the recently released 2021 Official GMAT Guide. There are a total of 42 new questions, 32 are Problem Solving and 10 are Data Sufficiency. The diagnostic test present in the 2020 Official GMAT Guide and earlie...

by dabral

Thu Apr 30, 2020 12:29 pm
Forum: GMAT Strategy
Topic: Free video explanations: 2021 GMAT Official Guide
Replies: 0
Views: 287

My review of GMAT Official Guide 2021

Here is a brief review of the recently released GMAT Official Guide 2021. Please note that I only give details on the quantitative reasoning section of the guide. 1) GMAT Official Guide 2021 has been released in ebook format and can be purchased from Wiley's website: https://www.efficientlearning.c...

by dabral

Tue Apr 28, 2020 3:30 pm
Forum: GMAT Strategy
Topic: My review of GMAT Official Guide 2021
Replies: 0
Views: 245

Hi pratj05, If you are starting out then I would focus on the core topics of Arithmetic, Algebra, and Word Problems and put on emphasis on data sufficiency, because that is unique to GMAT only. Once you have a handle on these, you can branch out to the other topics. Of course a lot will depend on yo...

by dabral

Tue Nov 07, 2017 11:05 pm
Forum: GMAT Math
Topic: What are the important topics one should focus on in quants?
Replies: 2
Views: 1992

Hi shaparage, With these type of problems, the key is to be able to set up the problem and translate it into an equation. One cannot just memorize the approach to these problems. The variations are too many. In this case, we can say that x liters of solution are moved from A to B, and vice versa. Le...

by dabral

Wed Nov 01, 2017 9:40 pm
Forum: GMAT Math
Topic: mixture problem. please hep with simple solution
Replies: 3
Views: 5368

Hi AAPL, First thing to recognize is that triangles ABC and CDE are similar(Why?). Also, notice that triangle CED is a 30-60-90 triangle because short side is of length 1 and the hypotenuse is 2. That means CE= sqrt{3} and therefore AC= 5*sqrt{3} . From the ratios of sides in a 30-60-90 triangle, we...

by dabral

Mon Oct 30, 2017 11:15 pm
Forum: Problem Solving
Topic: What is the perimeter of Δ ABC ?
Replies: 2
Views: 648

Hi swerve, First off this is not an official GMAT question because it assumes that you know that a unit square has a side of unit 1. The GMAT does not require one to have prior knowledge of jargon, and that is why I always recommend students to stick with official GMAT questions. As for this particu...

by dabral

Mon Oct 30, 2017 11:07 pm
Forum: Problem Solving
Topic: A unit square is circumscribed about a circle...
Replies: 1
Views: 529

2018 GMAT Quantitative Review: Free video explanations

I want to share with everyone the video explanations to all of the 300 problems in the recently released 2018 GMAT Quantitative Review. The link to the videos is posted below: Video explanations to GMAT Quantitative Review 2018 Cheers, Dabral https://s18.postimg.org/5dg9qod2d/2018_GMATQuant_Review....

by dabral

Mon Jul 03, 2017 6:07 pm
Forum: GMAT Math
Topic: 2018 GMAT Quantitative Review: Free video explanations
Replies: 1
Views: 3626


hi juliasbarreto,

I did a broad categorization of the 2017 GMAT Quantitative Review. The problems are segmented in to broad categories of Number Theory, Algebra, etc. Here is the link to the page: http://www.gmatquantum.com/blog/topic-s ... -2017.html

Cheers,
Dabral

by dabral

Mon Jul 03, 2017 6:02 pm
Forum: GMAT Math
Topic: OG Quantitative Review
Replies: 4
Views: 3841

2018 Official Guide GMAT: Free Video Explanations

I want to share with everyone the video explanations to all of the problems in the quantitative section of the new 2018 Official Guide for GMAT Review. The new guide consists of roughly 15% new questions. The diagnostic test questions remain the same as the prior editions of the GMAT guides. The li...

by dabral

Tue Jun 20, 2017 6:21 pm
Forum: GMAT Math
Topic: 2018 Official Guide GMAT: Free Video Explanations
Replies: 0
Views: 1969

OG GMAT 2017 Review: GMAC needs to address several issues

The Official Guide for GMAT Review 2017 brings incremental changes to the main official GMAT guide. The guide remains a must have for any student preparing for the GMAT, and is a good starting point towards serious GMAT preparation. However, if you have any of the past three editions of this guide,...

by dabral

Tue Jun 21, 2016 11:04 pm
Forum: GMAT Strategy
Topic: OG GMAT 2017 Review: GMAC needs to address several issues
Replies: 0
Views: 2084

2017 Official Guide GMAT: Free Video Explanations

I just posted the video explanations to all of the problems in the quantitative section of The Official Guide for GMAT Review 2017. The new guide consists of 62 new math questions compared to the 2016 guide. The diagnostic test questions remain the same as the prior editions of the GMAT guides. The...

by dabral

Fri Jun 17, 2016 11:11 pm
Forum: GMAT Math
Topic: 2017 Official Guide GMAT: Free Video Explanations
Replies: 0
Views: 4480

Hi Rich, Agreed, I deleted the problem statement. I do want to warn students that slightly more than 10% of the quant questions in Exam Pack 2 have already been discussed in this forum and gmatclub. So it may not be a good idea to practice with a lot of unknown problems prior to taking any of the o...

by dabral

Wed Mar 23, 2016 10:47 am
Forum: GMAT Strategy
Topic: GMATPrep Exam Pack 2: GMATQuantum's review
Replies: 2
Views: 5089

GMATPrep Exam Pack 2: GMATQuantum's review

Exam Pack 2 consists of two additional computer adaptive tests(CAT) that can be added to the official GMATPrep software. I have taken the Exam Pack 2 test multiple times and in this article I summarize my experience with Exam Pack 2. My comments are restricted to the quantitative section of the Exa...

by dabral

Tue Mar 22, 2016 10:55 pm
Forum: GMAT Strategy
Topic: GMATPrep Exam Pack 2: GMATQuantum's review
Replies: 2
Views: 5089

Jeremy,

This is great news!! Thank you GMAC for adding two more official practice tests to bring the total number of official tests to six. I have to give kudos to GMAC for significantly improving the amount of official practice materials over the last five years or so.

Cheers,
Dabral

by dabral

Mon Mar 21, 2016 7:59 pm
Forum: Ask the Test Maker
Topic: Plans to Release More Official GMAT Practice Tests?
Replies: 11
Views: 4009