BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

C & P

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
User avatar
Legendary Member
Posts: 965
Joined: Thu Jan 28, 2010 12:52 am
Thanked: 156 times
Followed by:34 members
GMAT Score:720

by vineeshp » Fri Mar 04, 2011 10:03 am
OA: IMO D.
Either statement is sufficient.

1) nCr = nCn-r rule. We can get n from this.

2) nC11=12, multiplying both sides by 11!
nC11*11!=12!
nP1=12!
==> n=12

Detailed explanation if my answer is right. :)
Vineesh,
Just telling you what I know and think. I am not the expert. :)
Top
Post new topic Post Reply
• Page 1 of 1