GRE Prep 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.
Sep 28Live Online Class with Top GRE Expert Mike Butville
08:00 PM EDT
-10:00 PM EDT
Top scores are possible when you enroll in a powerful GRE course, taught live online + 6 months access to TTP GRE OnDemand video courses included! Class starts Mon/Wed Sept. 28, 2026 - Dec. 9, 2026, 8:00pm-10:00pm EST
The number of distinct ways to form an ordered line of 3 peo
[#permalink]
09 Oct 2018, 09:42
09 Oct 2018, 09:42
1
Expert Reply
4
Bookmarks
00:00
Question Stats:
59% (01:00) correct
40% (00:55) wrong based on 148 sessions
Hide Show timer Statistics
Quantity A |
Quantity B |
The number of distinct ways to form an ordered line of 3 people by choosing from 6 people |
The number of distinct ways to form an unordered group of 3 people by choosing from 10 people |
Quantity A is greater.
Quantity B is greater.
The two quantities are equal.
The relationship cannot be determined from the information given.
Re: The number of distinct ways to form an ordered line of 3 peo
[#permalink]
11 Oct 2018, 15:51
11 Oct 2018, 15:51
Quantity A:
This is a permutation since order matters: 6*5*4 = 120
Quantity B:
This is a combination since order doesn't matter: 10C3 = 10!/3!(10!-3!) = 10*9*8*7!/(3*2*1)(7!) = 720/6 = 120
C is the correct answer.
This is a permutation since order matters: 6*5*4 = 120
Quantity B:
This is a combination since order doesn't matter: 10C3 = 10!/3!(10!-3!) = 10*9*8*7!/(3*2*1)(7!) = 720/6 = 120
C is the correct answer.
