Combinations and permutations help

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commdiver: Newbie | Next Rank: 10 Posts; Posts: 6; Joined: Fri Feb 10, 2012 12:18 am

by commdiver » Tue Oct 30, 2012 5:48 pm

I have the MGMAT number properties book, but still having trouble. Is there some other resource, preferably a free online one, that I can consult?

Source: Beat The GMAT — Quantitative Reasoning | Tue Oct 30, 2012 5:48 pm

Brent@GMATPrepNow: GMAT Instructor; Posts: 16207; Joined: Mon Dec 08, 2008 6:26 pm; Location: Vancouver, BC; Thanked: 5254 times; Followed by:1268 members; GMAT Score:770

by Brent@GMATPrepNow » Sat Nov 03, 2012 8:43 am

Many counting questions can be solved by applying the Fundamental Counting Principle (FCP).
We have a free video on the subject: https://www.gmatprepnow.com/module/gmat-counting?id=775

Afterwards, you can tackle these two practice questions:
- https://www.gmatprepnow.com/module/gmat-counting?id=778
- https://www.gmatprepnow.com/module/gmat-counting?id=779

Cheers,
Brent

Brent Hanneson - Creator of GMATPrepNow.com

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