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.
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:
In this conversation with Ankit Mehra, IESE MBA and CEO & Co-Founder, of GyanDhan, we will discuss how prospective MBA students can finance their MBA education with education loans and scholarships.
What do András from Hungary, Pablo from Mexico, Conner from the United States, Giorgio from Italy, Leo from Germany, and Rishab from India have in common? They all earned top scores on the GMAT Focus Edition using the Target Test Prep course!
Grab 20% off any Target Test Prep GMAT Focus plan during our Flash Sale. Just enter the coupon code FLASH20 at checkout to save up to $320. The offer ends on Tuesday, April 30.
After just 3 months of studying with the TTP GMAT Focus course, Conner scored an incredible 755 (Q89/V90/DI83) on the GMAT Focus. In this live interview, he shares how he achieved his outstanding 755 (100%) GMAT Focus score on test day.
What do András from Hungary, Conner from the United States, Giorgio from Italy, Leo from Germany, and Saahil from India have in common? They all earned top scores on the GMAT Focus Edition using the Target Test Prep course!
Operations with exponents
[#permalink]
05 Sep 2015, 20:25
Hi Everyone,
I have been getting a few problems wrong due to not fully understanding the basics of performing various operations with exponents. Does anyone know of a good blog covering these basics or maybe know of any good problem sets to re-hash this?
Thanks :-D
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Re: Operations with exponents
[#permalink]
05 Sep 2015, 20:30
DropBear wrote:
Hi Everyone,
I have been getting a few problems wrong due to not fully understanding the basics of performing various operations with exponents. Does anyone know of a good blog covering these basics or maybe know of any good problem sets to re-hash this?
Thanks
How about you post a couple of problems that you got wrong and what steps did you falter on? This will give a better understanding of what you are asking.
Re: Operations with exponents
[#permalink]
05 Sep 2015, 21:13
Engr2012 wrote:
DropBear wrote:
Hi Everyone,
I have been getting a few problems wrong due to not fully understanding the basics of performing various operations with exponents. Does anyone know of a good blog covering these basics or maybe know of any good problem sets to re-hash this?
Thanks
How about you post a couple of problems that you got wrong and what steps did you falter on? This will give a better understanding of what you are asking.
it's pretty broad, and just an area I am weak in general I often get the rules mixed up like when do you add exponents, when do you multiply exponents, what happens to the base number when you increase or decrease the exponent. I am sure I could sit there and fumble my way through most problems, but know I need to strengthen that part of my skill set as a whole.
Certainly not representative of everything I am lacking in this area, but an example of something I got wrong recently was this "If 2^2n + 2^2n + 2^2n + 2^2n = 4^24, then n =" I can clearly see this is a simple problem if you follow the steps and required very limited lateral or outside the box thinking but I sat there struggling with the steps and got it wrong.
Just through someone along the line might have made a review or work set covering all the major operations with exponents.
Re: Operations with exponents
[#permalink]
05 Sep 2015, 21:38
DropBear wrote:
Engr2012 wrote:
DropBear wrote:
Hi Everyone,
I have been getting a few problems wrong due to not fully understanding the basics of performing various operations with exponents. Does anyone know of a good blog covering these basics or maybe know of any good problem sets to re-hash this?
Thanks :-D
How about you post a couple of problems that you got wrong and what steps did you falter on? This will give a better understanding of what you are asking.
it's pretty broad, and just an area I am weak in general I often get the rules mixed up like when do you add exponents, when do you multiply exponents, what happens to the base number when you increase or decrease the exponent. I am sure I could sit there and fumble my way through most problems, but know I need to strengthen that part of my skill set as a whole.
Certainly not representative of everything I am lacking in this area, but an example of something I got wrong recently was this "If 2^2n + 2^2n + 2^2n + 2^2n = 4^24, then n =" I can clearly see this is a simple problem if you follow the steps and required very limited lateral or outside the box thinking but I sat there struggling with the steps and got it wrong.
Just through someone along the line might have made a review or work set covering all the major operations with exponents.
\(\frac{A^m}{A^n} = A^{m-n}\) ---> this can be visualized as follows:
\(\frac{1}{A^n}\) = \(A^{-n}\)
\(A^m*A^{-n} = A^{m-n}\)
\((A^m)^n\) = \(A^{mn}\)
\(\sqrt{A} = A^{1/2}\)
\(\sqrt[3]{A} = A^{1/3}\)
The biggest and the most important step is to break down the 'bigger' numbers into their corresponding prime factors. This way you will be able to reach the correct answer.
As for the question you posted, \(2^{2n}+2^{2n}+2^{2n}+2^{2n}\) = \(4*2^{2n}\) = \(2^2 * 2^{2n}\)= \(2^{2+2n}\) = \(4^{24}\)
\(2^{2+2n}\) = \(4^{24}\) ---> \(2^{2+2n}\) = \((2^2)^{24}\) ---> \(2^{2+2n}\) = \(2^{2*24}\) ---> equate the powers of same "bases", we get
2+2n=48 ---> n =23
Hope this helps.
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
close
05 Sep 2015, 20:25
