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

It is currently 22 Oct 2018, 11:43

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

In a 21 apartment building, there are in total 12 men and 9 women, eac

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Senior DS Moderator
User avatar
D
Joined: 27 Oct 2017
Posts: 906
Location: India
Concentration: International Business, General Management
GPA: 3.64
WE: Business Development (Energy and Utilities)
Premium Member CAT Tests
In a 21 apartment building, there are in total 12 men and 9 women, eac  [#permalink]

Show Tags

New post 30 Mar 2018, 23:03
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

83% (00:44) correct 17% (01:02) wrong based on 12 sessions

HideShow timer Statistics

In a 21 apartment building, there are in total 12 men and 9 women, each of whom resides in a
different apartment. If a poll taken is to select one of the apartments at random, what is the
probability that the resident of the apartment selected will be a woman who is a student?

(1) Among the women, four are students.
(2) Among the women, five are not students.

_________________

Win Tests/ Prep Courses- Weekly Quant Quiz Contest
Weekly Quant Quiz Questions- Direct Download
SC: Confusable words

All you need for Quant, GMAT PS Question Directory,GMAT DS Question Directory
Error log/Key Concepts
Combination Concept: Division into groups
Question of the Day (QOTD)
Free GMAT CATS

Intern
Intern
avatar
B
Joined: 15 Jan 2018
Posts: 1
Re: In a 21 apartment building, there are in total 12 men and 9 women, eac  [#permalink]

Show Tags

New post 30 Mar 2018, 23:29
4/21 - ans is D

Sent from my A1601 using GMAT Club Forum mobile app
Senior DS Moderator
User avatar
D
Joined: 27 Oct 2017
Posts: 906
Location: India
Concentration: International Business, General Management
GPA: 3.64
WE: Business Development (Energy and Utilities)
Premium Member CAT Tests
Re: In a 21 apartment building, there are in total 12 men and 9 women, eac  [#permalink]

Show Tags

New post 31 Mar 2018, 00:18
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 50042
Re: In a 21 apartment building, there are in total 12 men and 9 women, eac  [#permalink]

Show Tags

New post 31 Mar 2018, 01:07
gmatbusters wrote:
In a 21 apartment building, there are in total 12 men and 9 women, each of whom resides in a
different apartment. If a poll taken is to select one of the apartments at random, what is the
probability that the resident of the apartment selected will be a woman who is a student?

(1) Among the women, four are students.
(2) Among the women, five are not students.


Discussed here: https://gmatclub.com/forum/a-total-of-9 ... 90081.html
_________________

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

GMAT Club Bot
Re: In a 21 apartment building, there are in total 12 men and 9 women, eac &nbs [#permalink] 31 Mar 2018, 01:07
Display posts from previous: Sort by

In a 21 apartment building, there are in total 12 men and 9 women, eac

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


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®.