GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video

It is currently 10 Jul 2020, 05:46

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

A class consists of 10 boys and 20 girls. Exactly half of the boys and

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Manager
Manager
User avatar
S
Joined: 01 Jun 2019
Posts: 72
A class consists of 10 boys and 20 girls. Exactly half of the boys and  [#permalink]

Show Tags

New post 01 Jun 2020, 20:01
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

A class consists of 10 boys and 20 girls. Exactly half of the boys and half of the girls have brown eyes. Determine the probability that a randomly selected student will be a boy or a student with brown eyes.

(A)\(\frac{1}{3}\)

(B)\(\frac{1}{2}\)

(C)\(\frac{1}{5}\)

(D)\(\frac{2}{3}\)

(E)\(\frac{1}{4}\)
Senior Manager
Senior Manager
avatar
S
Joined: 18 Dec 2017
Posts: 297
Re: A class consists of 10 boys and 20 girls. Exactly half of the boys and  [#permalink]

Show Tags

New post 01 Jun 2020, 20:26
Number of students having brown eyes=15
Number of boys having brown eyes= 5
Probability = (10+15-5)÷30
=2/3

Posted from my mobile device
GMAT Club Bot
Re: A class consists of 10 boys and 20 girls. Exactly half of the boys and   [#permalink] 01 Jun 2020, 20:26

A class consists of 10 boys and 20 girls. Exactly half of the boys and

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





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