Last visit was: 31 Oct 2024, 16:33 It is currently 31 Oct 2024, 16:33
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
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 31 Oct 2024
Posts: 96,533
Own Kudos:
673,099
 [2]
Given Kudos: 87,883
Products:
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 96,533
Kudos: 673,099
 [2]
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
User avatar
CareerGeek
Joined: 20 Jul 2017
Last visit: 28 Oct 2024
Posts: 1,297
Own Kudos:
Given Kudos: 162
Location: India
Concentration: Entrepreneurship, Marketing
GMAT 1: 690 Q51 V30
WE:Education (Education)
GMAT 1: 690 Q51 V30
Posts: 1,297
Kudos: 3,726
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
BrentGMATPrepNow
User avatar
GMAT Club Legend
Joined: 12 Sep 2015
Last visit: 13 May 2024
Posts: 6,790
Own Kudos:
31,783
 [2]
Given Kudos: 799
Location: Canada
Expert reply
Posts: 6,790
Kudos: 31,783
 [2]
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
Archit3110
User avatar
GMAT Club Legend
Joined: 18 Aug 2017
Last visit: 31 Oct 2024
Posts: 8,099
Own Kudos:
Given Kudos: 243
Status:You learn more from failure than from success.
Location: India
Concentration: Sustainability, Marketing
GMAT Focus 1: 545 Q79 V79 DI73
GPA: 4
WE:Marketing (Energy)
Products:
GMAT Focus 1: 545 Q79 V79 DI73
Posts: 8,099
Kudos: 4,406
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
Jorge has 5 quarters and 3 nickels. If he picks two of these coins at random, what is the probability that both will be quarters?

(A) 1/4
(B) 5/14
(C) 25/64
(D) 5/8
(E) 2/3

total coins ; 8
quarters 2; 5/8*4/7 ; 5/14
IMO B
User avatar
ScottTargetTestPrep
User avatar
Target Test Prep Representative
Joined: 14 Oct 2015
Last visit: 31 Oct 2024
Posts: 19,675
Own Kudos:
Given Kudos: 287
Status:Founder & CEO
Affiliations: Target Test Prep
Location: United States (CA)
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 19,675
Kudos: 23,711
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
Jorge has 5 quarters and 3 nickels. If he picks two of these coins at random, what is the probability that both will be quarters?

(A) 1/4
(B) 5/14
(C) 25/64
(D) 5/8
(E) 2/3


P(two quarters) = 5/8 x 4/7 = 20/56 = 5/14

Answer: B
User avatar
Kinshook
User avatar
GMAT Club Legend
Joined: 03 Jun 2019
Last visit: 31 Oct 2024
Posts: 5,400
Own Kudos:
Given Kudos: 161
Location: India
GMAT 1: 690 Q50 V34
WE:Engineering (Transportation)
Products:
GMAT 1: 690 Q50 V34
Posts: 5,400
Kudos: 4,481
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
Jorge has 5 quarters and 3 nickels. If he picks two of these coins at random, what is the probability that both will be quarters?

(A) 1/4
(B) 5/14
(C) 25/64
(D) 5/8
(E) 2/3


# of all outcomes = \(C^8_2 = 28\)
# of favorable outcomes = \(C^5_2 = 10\)

Probability = \(\frac{10}{28}= \frac{5}{14}\)


IMO B
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 35,330
Own Kudos:
Posts: 35,330
Kudos: 902
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Moderator:
Math Expert
96533 posts