Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
22 Jul 2004, 09:25
Kudos
Bookmarks
Hi all
How does one count the factors of a given number consdiering 1 and number itself.
Thanks
How does one count the factors of a given number consdiering 1 and number itself.
Thanks
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!
22 Jul 2004, 12:08
Kudos
Bookmarks
Be extremely systematic. I make couples, starting with one, and counting up. You'll soon cover everything:
60:
1&60
2&30
3&20
4&15
5&12
6&10
By counting up on the low end, you cover everything on the high end as well. In this example, the next factor up from 6 is 10, and that's already there, and so is everything else above 10. This is better than randomly throwing out numbers until you hit them all.
Try it with a couple of examples that have lots of factors, like 24, 72, 36, 105.
Try it also with some variables: Name all the factors of 4p if p is a prime number.
4p:
1&4p
2&2p
4&p
That's it!
60:
1&60
2&30
3&20
4&15
5&12
6&10
By counting up on the low end, you cover everything on the high end as well. In this example, the next factor up from 6 is 10, and that's already there, and so is everything else above 10. This is better than randomly throwing out numbers until you hit them all.
Try it with a couple of examples that have lots of factors, like 24, 72, 36, 105.
Try it also with some variables: Name all the factors of 4p if p is a prime number.
4p:
1&4p
2&2p
4&p
That's it!
22 Jul 2004, 12:55
Kudos
Bookmarks
saurya_s
Dear saurya_s, we(me and gravedigger) are working on a system of automated training which will contain easy and quick formulas for this and other things.
