How many triangles can be formed by joining 12 points, 7 of : Quant Question Archive [LOCKED]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 19 Jan 2017, 18:59

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# How many triangles can be formed by joining 12 points, 7 of

Author Message
Manager
Joined: 26 Jul 2004
Posts: 53
Followers: 1

Kudos [?]: 2 [0], given: 0

How many triangles can be formed by joining 12 points, 7 of [#permalink]

### Show Tags

09 Sep 2004, 10:47
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

How many triangles can be formed by joining 12 points, 7 of which as collinear?
Director
Joined: 16 Jun 2004
Posts: 893
Followers: 3

Kudos [?]: 59 [0], given: 0

### Show Tags

09 Sep 2004, 11:59
1
This post was
BOOKMARKED
3 points needed to form a triange. Total possibilities is 12C3.
However, 7 points are in the same line (collinear), hence we can't have a traingle. The net result is,

(12C3 - 7C3).
GMAT Club Legend
Joined: 09 Sep 2013
Posts: 13459
Followers: 575

Kudos [?]: 163 [0], given: 0

Re: How many triangles can be formed by joining 12 points, 7 of [#permalink]

### Show Tags

02 Jan 2017, 01:55
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Re: How many triangles can be formed by joining 12 points, 7 of   [#permalink] 02 Jan 2017, 01:55
Display posts from previous: Sort by