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 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.
08 Jan 2020, 10:18
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
31% (01:38) correct
69%
(01:21)
wrong
based on 105
sessions
History
Date
Time
Result
Not Attempted Yet
A ticket is selected at random from 50 tickets numbered 00, 01, 02, ……, 49. Find the probability that the sum of the digits on the selected ticket is 8, given that the product of these digits is zero.
A. 1/14
B. 1/10
C. 1/11
D. 1/50
E. 1/25
Posted from my mobile device
A. 1/14
B. 1/10
C. 1/11
D. 1/50
E. 1/25
Posted from my mobile device
Updated on: 08 Jan 2020, 22:13
Originally posted by rajatchopra1994 on 08 Jan 2020, 21:31.
Last edited by rajatchopra1994 on 08 Jan 2020, 22:13, edited 1 time in total.
Last edited by rajatchopra1994 on 08 Jan 2020, 22:13, edited 1 time in total.
Kudos
Bookmarks
Dillesh4096
Explanation:
Event A: When Sum is 8
Favorable Outcome: 08, 17, 26, 35, 44
Event B: When Product is Zero.
Fav. Outcome : 00, 01, 02,........09, 10, 20, 30, 40
A∩B = 08 (only One Case Common in Event A & B)
Required Probability = P(A/B) = P(A∩B)/P(B) = 1/50 / 14/50
=1/14
IMO-A
08 Jan 2020, 22:05
Kudos
Bookmarks
Dillesh4096
No. of favourable outcomes=08 (product of digits must also be zero so this is the only case)
=>1/50
IMO answer choice is D
