Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2301:30 AM EDT
-02:30 AM EDT
Struggling with GMAT Verbal as a non-native speaker? Harsh improved his score from 595 to 695 in just 45 days—and scored a 99 %ile in Verbal (V88)! Learn how smart strategy, clarity, and guided prep helped him gain 100 points.
Apr 2308:00 PM PDT
-09:00 PM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
Apr 2212:30 AM EDT
-01:30 AM EDT
At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
88% (01:15) correct
12%
(01:52)
wrong
based on 165
sessions
History
Date
Time
Result
Not Attempted Yet
There are 7 Physics and 1 Chemistry book in shelf A and 5 Physics books in Shelf B, one book is moved from shelf A to shelf B. A student picks up a book from shelf B. Find the probability that the Chemistry book is taken by the student.
A. 7/8
B. 1/8
C. 1/48
D. 5/48
E. 5/6
A. 7/8
B. 1/8
C. 1/48
D. 5/48
E. 5/6
06 Aug 2013, 05:28
Kudos
Bookmarks
I)Probability that the book moved from A to B is Chemistry=\(\frac{1}{8}\).
II)Probability that the boom taken from B is Chemistry=\(\frac{1}{6}\).
\(P=\frac{1}{8}*\frac{1}{6}=\frac{1}{48}\).
C
II)Probability that the boom taken from B is Chemistry=\(\frac{1}{6}\).
\(P=\frac{1}{8}*\frac{1}{6}=\frac{1}{48}\).
C
06 Aug 2013, 05:41
Kudos
Bookmarks
Consider moving of the 1 book from shelf A to shelf B as the 1st event that is followed by student picking a book from shelf B as the second event.
P(Student picking a chemistry book from shelf B) = P(Moving a chemistry book from shelf A to shelf B) * P(Student picking a chemistry book from shelf B)
= 1/8* 1/6 ( There are total 8 books of which 1 is chemistry book and after the move, there will be 1 chemistry book in the new number of books (6) in shelf B)
= 1/48
Hence answer is C
Hope this helps.
P(Student picking a chemistry book from shelf B) = P(Moving a chemistry book from shelf A to shelf B) * P(Student picking a chemistry book from shelf B)
= 1/8* 1/6 ( There are total 8 books of which 1 is chemistry book and after the move, there will be 1 chemistry book in the new number of books (6) in shelf B)
= 1/48
Hence answer is C
Hope this helps.
