Last visit was: 10 Sep 2026, 18:58 It is currently 10 Sep 2026, 18:58
Home
Messages
Tests
Schools
Events
Close
GMAT Club Daily Prep
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
User avatar
megafan
User avatar
Joined: 28 May 2009
Last visit: 15 Oct 2017
Posts: 137
Own Kudos:
1,021
Given Kudos: 91
Location: United States
Concentration: Strategy, General Management
Schools: Stern PT Fall'18 Booth PT '18
GMAT Date: 03-22-2013
GPA: 3.57
WE:Information Technology (Consulting)
Schools: Stern PT Fall'18 Booth PT '18
Posts: 137
Kudos: 1,021
Big 7 Number Properties to memorize Updated on: 24 Dec 2012, 21:44
Originally posted by megafan on 16 Dec 2012, 21:50.
Last edited by megafan on 24 Dec 2012, 21:44, edited 1 time in total.
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I always seem to make some silly mistakes on Number Properties problems. So I created this chart containing the "Big 7" numbers, the number properties, IMHO, that one must check before proceeding to select an answer. Below is a screenshot of the notes that I made to remind myself of these rules (correct me if I screwed up on something), hope it helps you guys as well:



As pointed our by jakelong1, I've added an attachment that adds a perspective to the above image, which hopefully should clear up any confusion:

Attachment:
big-7.png



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.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
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.
Thank you for understanding, and happy exploring!
avatar
jakelong1
avatar
Joined: 05 Aug 2012
Last visit: 08 Aug 2018
Posts: 10
Own Kudos:
6
Given Kudos: 2
Posts: 10
Kudos: 6
Big 7 Number Properties to memorize 24 Dec 2012, 21:26
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bro.. can you please explain this diagram first, because without any info I was able to deduce most, but not great in confidence so wanted to cross check whether I was right or not. It would be great if you could explain what exactly you are trying to do here
User avatar
megafan
User avatar
Joined: 28 May 2009
Last visit: 15 Oct 2017
Posts: 137
Own Kudos:
1,021
Given Kudos: 91
Location: United States
Concentration: Strategy, General Management
Schools: Stern PT Fall'18 Booth PT '18
GMAT Date: 03-22-2013
GPA: 3.57
WE:Information Technology (Consulting)
Schools: Stern PT Fall'18 Booth PT '18
Posts: 137
Kudos: 1,021
Big 7 Number Properties to memorize 24 Dec 2012, 21:41
Kudos
Add Kudos
Bookmarks
Bookmark this Post
jakelong1
Bro.. can you please explain this diagram first, because without any info I was able to deduce most, but not great in confidence so wanted to cross check whether I was right or not. It would be great if you could explain what exactly you are trying to do here
Show more

Thanks for pointing out. I use it as my memory aid, and you are probably right that it wont make any sense without some information on how I came to this level of abstraction. I basically got this from "Chilli Hot GMAT", it's a great refresher, and also has a lot of practice problems. You can purchase it at Amazon, it also comes in Kindle format -- which is what I purchased. Anyway, here's the excerpt from the book that further explains the Big-7 numbers (I basically abstracted my memory aid above from the reasoning mentioned below):

Attachment:
big-7.png



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.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
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.
Thank you for understanding, and happy exploring!