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GMAT Problem Solving Question 01: Arithmetico-Geometric series

May 16, 2020 Leave a Comment

 
The following GMAT Problem Solving question tests your understanding of how to find the sum of an arithmetico-geometric series. This is a difficult question and you should expect something along these lines if you are scoring Q49+ on the GMAT quantitative section.

The limiting sum of the infinite series
12+34+58+716+932+…12+34+58+716+932+…
whose nn-th term is 2n−12n2n−12n is:

  1. 5252
  2. 33
  3. 7272
  4. 154154
  5. 44

Choice B

Video explanation

 

Free video explanations: GMAT Official Guide Quantitative Review 2021

May 8, 2020 Leave a Comment

 

I just published the video explanations to all of the 373 quantitative reasoning questions in the GMAT Official Guide Quantitative Review 2021, which was released as an ebook in late April 2021. The physical copy of the guide is scheduled to be released on 3rd June 2020. There are a total of 212 Problem Solving questions and 161 Data Sufficiency questions. Out of these 54 are newly released questions in this guide: 36 Problem Solving questions and 18 Data Sufficiency questions.

My video review of GMAT Official Guide 2021

May 5, 2020 Leave a Comment

 

Review of GMAT Official Guide Quantitative Review 2021

May 4, 2020 Leave a Comment

 

  • GMAT Official Guide Quantitative Review 2021 has been released in ebook format and can be purchased from Wiley’s website.
  • The physical copy of the GMAT Official Guide Quantitative Review 2021 will be available on Amazon and other retailers starting 3rd June 2020.
  • This year’s guide is a significant improvement over previous editions. Instead of replacing questions, as has been done in the past, this year the test writers added a new set of 54 questions to last year’s total of 319 questions in the 2020 GMAT Quantitative Review guide.
  • The new guide has a total of 373 quantitative reasoning questions: 212 are Problem Solving questions and 161 are Data Sufficiency questions.
  • A total of 54 questions are new to the 2021 edition of the GMAT Quantitative Review.
  • Here is the list of the 36 newly added Problem Solving questions: 37, 55, 59, 73, 80, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 135, 147, 150, 156, 157, 158, 161, 163, 179, 204, 205, 207, 208, 209, 210, 212.
  • Here is the list of the 18 newly added Data Sufficiency questions: 214, 216, 218, 221, 224, 234, 241, 248, 249, 264, 265, 271, 272, 273, 276, 277, 307, 370.
  • There are quite a few difficult questions in this year’s GMAT Quantitative Review guide. I would rate at least 10 of them to be on the very difficult side, and more so when you have to do these problems under time and pressure.

Free video explanations: GMAT Official Guide 2021

April 30, 2020 Leave a Comment

 

I just published the video explanations to all of the 550 quantitative reasoning questions in the GMAT Official Guide 2021, which was released as an ebook in late April 2021. The physical official guide is due to be released on 3rd June 2020. There are 262 Problem Solving questions and 240 Data Sufficiency questions. Out of these 502 questions, 42 are newly released. The remaining 48 questions are available as part of the GMAT Online Question Bank. These 48 questions formed the diagnostic test in the 2020 GMAT Official Guide and older editions.

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