It is currently 18 Sep 2019, 15:49

### 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
Your Progress

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

# This is how Edward’s Lotteries work. First, 9 different numb

 Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:
Founder
Joined: 18 Apr 2015
Posts: 8120
Followers: 157

Kudos [?]: 1700 [1] , given: 7473

This is how Edward’s Lotteries work. First, 9 different numb [#permalink]  08 May 2019, 10:07
1
This post received
KUDOS
Expert's post
00:00

Question Stats:

41% (01:30) correct 58% (01:34) wrong based on 12 sessions
This is how Edward’s Lotteries work. First, 9 different numbers are selected. Tickets with exactly 6 of the 9 numbers randomly selected are printed such that no two tickets have the same set of numbers. Finally, the winning ticket is the one containing the 6 numbers drawn from the 9 randomly. There is exactly one winning ticket in the lottery system. How many tickets can the lottery system print?

(A) $$9P_6$$

(B) $$9P_3$$

(C) $$9C_9$$

(D) $$9C_6$$

(E) $$6^9$$
[Reveal] Spoiler: OA

_________________
Manager
Joined: 22 Aug 2019
Posts: 59
Followers: 0

Kudos [?]: 30 [1] , given: 8

Re: This is how Edward’s Lotteries work. First, 9 different numb [#permalink]  23 Aug 2019, 06:43
1
This post received
KUDOS
Carcass wrote:
This is how Edward’s Lotteries work. First, 9 different numbers are selected. Tickets with exactly 6 of the 9 numbers randomly selected are printed such that no two tickets have the same set of numbers. Finally, the winning ticket is the one containing the 6 numbers drawn from the 9 randomly. There is exactly one winning ticket in the lottery system. How many tickets can the lottery system print?

(A) $$9P_6$$

(B) $$9P_3$$

(C) $$9C_9$$

(D) $$9C_6$$

(E) $$6^9$$

9 numbers, choose 6 of them. 9C6. D.
Intern
Joined: 01 May 2019
Posts: 4
Followers: 0

Kudos [?]: 1 [0], given: 10

Re: This is how Edward’s Lotteries work. First, 9 different numb [#permalink]  10 Sep 2019, 19:44
Can someone explain this? I thought it would be 9P6 since it states that "Tickets with exactly 6 of the 9 numbers randomly selected are printed such that no two tickets have the same set of numbers.
Manager
Joined: 22 Aug 2019
Posts: 59
Followers: 0

Kudos [?]: 30 [2] , given: 8

Re: This is how Edward’s Lotteries work. First, 9 different numb [#permalink]  10 Sep 2019, 22:47
2
This post received
KUDOS
logann2 wrote:
Carcass wrote:
This is how Edward’s Lotteries work. First, 9 different numbers are selected. Tickets with exactly 6 of the 9 numbers randomly selected are printed such that no two tickets have the same set of numbers. Finally, the winning ticket is the one containing the 6 numbers drawn from the 9 randomly. There is exactly one winning ticket in the lottery system. How many tickets can the lottery system print?

(A) $$9P_6$$

(B) $$9P_3$$

(C) $$9C_9$$

(D) $$9C_6$$

(E) $$6^9$$

9 numbers, choose 6 of them. 9C6. D.

Selected exactly 6 of the 9 available numbers means they're randomly picking 6 of the 9 numbers. The part that lets you know that it's indeed a choose function and not permutation is that the problem says that "no two tickets contain the same numbers" and (paraphrasing) "the winning ticket contains the 6 winning numbers"

So order doesn't matter. Does that help?
Intern
Joined: 01 May 2019
Posts: 4
Followers: 0

Kudos [?]: 1 [0], given: 10

Re: This is how Edward’s Lotteries work. First, 9 different numb [#permalink]  11 Sep 2019, 09:18
logann2 wrote:
logann2 wrote:
Carcass wrote:
This is how Edward’s Lotteries work. First, 9 different numbers are selected. Tickets with exactly 6 of the 9 numbers randomly selected are printed such that no two tickets have the same set of numbers. Finally, the winning ticket is the one containing the 6 numbers drawn from the 9 randomly. There is exactly one winning ticket in the lottery system. How many tickets can the lottery system print?

(A) $$9P_6$$

(B) $$9P_3$$

(C) $$9C_9$$

(D) $$9C_6$$

(E) $$6^9$$

9 numbers, choose 6 of them. 9C6. D.

Selected exactly 6 of the 9 available numbers means they're randomly picking 6 of the 9 numbers. The part that lets you know that it's indeed a choose function and not permutation is that the problem says that "no two tickets contain the same numbers" and (paraphrasing) "the winning ticket contains the 6 winning numbers"

So order doesn't matter. Does that help?

Yes, Thanks
Re: This is how Edward’s Lotteries work. First, 9 different numb   [#permalink] 11 Sep 2019, 09:18
Display posts from previous: Sort by

# This is how Edward’s Lotteries work. First, 9 different numb

 Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.