Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

This may sound silly - but I NEVER look at the answers before I solve the problem. I appreciate this is stupid - because I could at least evaluate them, but I am too concerned with time.

Now, the more I study the more I realise that solving a problem with 25 quadratic equations is great...but impossible in 2min. I realised I need to start practicing backsolving.

Hence I have 2 questions 1. How does one do it? Where do I start? How do I get into it if I never did it before? 2. How do I quickly figure out if a problem is worth backsolving as opposed to solving?

This may sound silly - but I NEVER look at the answers before I solve the problem. I appreciate this is stupid - because I could at least evaluate them, but I am too concerned with time.

Now, the more I study the more I realise that solving a problem with 25 quadratic equations is great...but impossible in 2min. I realised I need to start practicing backsolving.

Hence I have 2 questions 1. How does one do it? Where do I start? How do I get into it if I never did it before? 2. How do I quickly figure out if a problem is worth backsolving as opposed to solving?

Thanks!

Keep in mind that backsolving does not work for all questions. In fact, pure backsolving is suitable for a small subset only. This doesn't mean that you need equations to solve the rest of the questions. A mix of logic, number plugging, backsolving, algebra etc will help. Look at the big picture and understand the concepts. Check my blog: http://www.veritasprep.com/blog/categor ... er-wisdom/

It is always a good idea to look at the options which is not hard in PS questions. All you need is a glance to see the options. But the options will give you some ideas - the range in which the answer will lie, some options may be outright absurd etc.

To start practicing, search "backsolving" on the forum to identify questions which can be solved using this method. Put in some time in them. Slowly you will get a hang of the type of questions in which backsolving works.
_________________

Re: How to start practicing backsolving? [#permalink]

Show Tags

24 Jul 2014, 01:22

VeritasPrepKarishma wrote:

imoi wrote:

This may sound silly - but I NEVER look at the answers before I solve the problem. I appreciate this is stupid - because I could at least evaluate them, but I am too concerned with time.

Now, the more I study the more I realise that solving a problem with 25 quadratic equations is great...but impossible in 2min. I realised I need to start practicing backsolving.

Hence I have 2 questions 1. How does one do it? Where do I start? How do I get into it if I never did it before? 2. How do I quickly figure out if a problem is worth backsolving as opposed to solving?

Thanks!

Keep in mind that backsolving does not work for all questions. In fact, pure backsolving is suitable for a small subset only. This doesn't mean that you need equations to solve the rest of the questions. A mix of logic, number plugging, backsolving, algebra etc will help. Look at the big picture and understand the concepts. Check my blog: http://www.veritasprep.com/blog/categor ... er-wisdom/

It is always a good idea to look at the options which is not hard in PS questions. All you need is a glance to see the options. But the options will give you some ideas - the range in which the answer will lie, some options may be outright absurd etc.

To start practicing, search "backsolving" on the forum to identify questions which can be solved using this method. Put in some time in them. Slowly you will get a hang of the type of questions in which backsolving works.

Hi Karishma!

Thanks for your reply - had a chance to glance through your blog, 48 in quant is actually where I am stuck so it was useful to learn that saving time on easy, as opposed to trying to squeeze into 2 min hard questions could be useful.

Will search the forum. Except for that - what's your personal take on backsolving? Worth it? You mentioned only a limited number of questions fall into this category, how do you quickly uncover these and save yourself 2min on useless equations?

This may sound silly - but I NEVER look at the answers before I solve the problem. I appreciate this is stupid - because I could at least evaluate them, but I am too concerned with time.

Now, the more I study the more I realise that solving a problem with 25 quadratic equations is great...but impossible in 2min. I realised I need to start practicing backsolving.

Hence I have 2 questions 1. How does one do it? Where do I start? How do I get into it if I never did it before? 2. How do I quickly figure out if a problem is worth backsolving as opposed to solving?

Thanks!

Keep in mind that backsolving does not work for all questions. In fact, pure backsolving is suitable for a small subset only. This doesn't mean that you need equations to solve the rest of the questions. A mix of logic, number plugging, backsolving, algebra etc will help. Look at the big picture and understand the concepts. Check my blog: http://www.veritasprep.com/blog/categor ... er-wisdom/

It is always a good idea to look at the options which is not hard in PS questions. All you need is a glance to see the options. But the options will give you some ideas - the range in which the answer will lie, some options may be outright absurd etc.

To start practicing, search "backsolving" on the forum to identify questions which can be solved using this method. Put in some time in them. Slowly you will get a hang of the type of questions in which backsolving works.

Hi Karishma!

Thanks for your reply - had a chance to glance through your blog, 48 in quant is actually where I am stuck so it was useful to learn that saving time on easy, as opposed to trying to squeeze into 2 min hard questions could be useful.

Will search the forum. Except for that - what's your personal take on backsolving? Worth it? You mentioned only a limited number of questions fall into this category, how do you quickly uncover these and save yourself 2min on useless equations?

My answer will depend on when you plan to take the test. If you have enough time on hand, then I will tell you that most equations you write down are a waste of time. But the alternative is not backsolving; it is logic and reasoning. If your exam is soon enough - say within a month or so - then stick to your methods.

As I said before, pure backsolving is not used often since it takes a lot of time. But be aware of the options. Say, you get an awkward equation and options are the values of x in the equation. Try substituting an option and get a feel of whether you need a smaller number or larger. Then pick the next option to try accordingly. This post will give you some ideas: http://www.veritasprep.com/blog/2013/03 ... culations/ _________________

Its been long time coming. I have always been passionate about poetry. It’s my way of expressing my feelings and emotions. And i feel a person can convey...

Written by Scottish historian Niall Ferguson , the book is subtitled “A Financial History of the World”. There is also a long documentary of the same name that the...

Post-MBA I became very intrigued by how senior leaders navigated their career progression. It was also at this time that I realized I learned nothing about this during my...