GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 24 Sep 2018, 22:23

Close

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

D01-39

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Intern
Intern
avatar
B
Joined: 17 Sep 2013
Posts: 3
Premium Member CAT Tests
Re: D01-39  [#permalink]

Show Tags

New post 19 Jun 2018, 22:48
Hi there, i am relatively new to this group and could you please help me with the basics of this topic (may be with some link), i find this really difficult.
_________________

regards,

honcho

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 49438
Re: D01-39  [#permalink]

Show Tags

New post 19 Jun 2018, 23:21
1
honcho11 wrote:
Hi there, i am relatively new to this group and could you please help me with the basics of this topic (may be with some link), i find this really difficult.


21. Combinatorics/Counting Methods



For more:
ALL YOU NEED FOR QUANT ! ! !
Ultimate GMAT Quantitative Megathread
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

Intern
Intern
avatar
B
Joined: 12 Jan 2018
Posts: 19
Re: D01-39  [#permalink]

Show Tags

New post 20 Jun 2018, 00:23
I also solved using the All Possibilities - Possibilities with two books.

All possibilities = 10!/5!5! = 252

All possibilities where he MUST bring 2 large books, 2 of the slots are now taken by the large books in all scenarios, so the combinatorics setup is 8 books to fill 3 spots. 8!/3!5! = 56

252 - 56 = 196, therefore (D).
Senior Manager
Senior Manager
avatar
G
Joined: 15 Oct 2017
Posts: 305
Reviews Badge CAT Tests
Re: D01-39  [#permalink]

Show Tags

New post 24 Aug 2018, 09:26
Hi Bunuel, I have a very dumb question but I really need to clear my doubt. So, say in this question had the books not been "distinct", would the number be required to be divided by its factorial? I have solved so any questions but this doubt still remains.

Please help!
Thank you.
GMAT Club Bot
Re: D01-39 &nbs [#permalink] 24 Aug 2018, 09:26

Go to page   Previous    1   2   [ 24 posts ] 

Display posts from previous: Sort by

D01-39

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  

Moderators: chetan2u, Bunuel

Events & Promotions

PREV
NEXT


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.