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.
Sep 0212:30 AM EDT
-01:30 AM EDT
Thought your job leaves no time for GMAT prep? After multiple GMAT attempts and a demanding consulting job, Kshitij improved to 695 in under 2 months. Learn the mindset shifts, study strategy, and execution changes that made the breakthrough possible.
Sep 0208:00 PM PDT
-09:00 PM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
Aug 2710:00 AM EDT
-11:00 AM EDT
We’ve worked incredibly hard to build TTP into the best test prep experience possible, and it would mean a lot to us to win Newsweek’s 2026 Readers’ Choice Award for Best Test Prep. If TTP has helped you, we’d be incredibly grateful for your vote.
Sep 0301:30 AM EDT
-02:30 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.
Sep 0410:00 AM PDT
-11:00 AM PDT
What does test anxiety really look like on the GMAT? For many test takers, it does not look like a panic attack. Instead, it shows up as brain fog, rereading, negative comparisons, mental noise....
Sep 0609:30 AM EDT
-12:30 PM EST
Top scores are possible when you enroll in a powerful EA course, taught live online + 6 months access to TTP OnDemand video courses included! Perfect class schedule and easy course access for working professionals. Class starts Sundays Sept. 6, 2026.- Sep 07
12:01 AM PDT
-11:59 PM PDT
On the 7th, GMAT Club Tests will be Free! Including all the Quizzes, Questions, and Tests. 12 AM - 11:59 PM PDT - Sep 09
07:00 AM PDT
-10:00 AM PDT
Meet AdComs and explore top Master’s programs - MiM, MiF, MSc, MSBA and more. - Application Fee Waivers - Free 1-Week of GMAT Club Tests: - Master's Application Toolkit - Grand Prize Giveaway 
Sep 1507:00 PM EDT
-09:00 PM EST
Elite scores are possible when you enroll in a powerful GMAT course, taught live online + 6 months access to TTP OnDemand video courses included! Class starts Tues/Thurs Sept. 15, 2026 - Nov. 15, 2027, 7:00pm-9:00pm EST
Sep 2108:00 PM EDT
-10:00 PM EDT
Boost your GMAT score in less than one month in a live online class + 6 months access to TTP OnDemand video courses included! Class starts Mon, Tues, Wed, Thur, Fri Sept. 21, 2026 - Oct. 9, 2027, 7:00pm-10:00pm EST
23 Mar 2021, 05:00
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
76% (01:17) correct
24%
(01:35)
wrong
based on 192
sessions
History
Date
Time
Result
Not Attempted Yet
A student attempts a question paper comprising 5 true or false questions. If he answers the entire paper randomly, what is the probability that he answers exactly 4 questions correctly?
A. 5/243
B. 1/8
C. 5/32
D. 5/16
E. 5/8
A. 5/243
B. 1/8
C. 5/32
D. 5/16
E. 5/8
23 Mar 2021, 05:20
Kudos
Bookmarks
Is it B?
4/32: Total no. of correct answers:4; vs the Total no. of available options 2^5. Since there are 5 questions and each has two options. And, likely event: possible events/Total events. Hence the answer.
Posted from my mobile device
4/32: Total no. of correct answers:4; vs the Total no. of available options 2^5. Since there are 5 questions and each has two options. And, likely event: possible events/Total events. Hence the answer.
Posted from my mobile device
ananya3
Current Student
Joined: 05 Oct 2018
Last visit: 17 Dec 2022
Posts: 105
Given Kudos: 152
Location: India
Schools: Fuqua '24 Haas '24 ISB '23 Johnson '24 Kelley '24 Kenan-Flagler '24 McDonough '24 NUS Ross '24 Tepper '24 Tuck '24 Rotman '24 (A)
GMAT 1: 700 Q49 V36
GPA: 3.87
Schools: Fuqua '24 Haas '24 ISB '23 Johnson '24 Kelley '24 Kenan-Flagler '24 McDonough '24 NUS Ross '24 Tepper '24 Tuck '24 Rotman '24 (A)
GMAT 1: 700 Q49 V36
Posts: 105
23 Mar 2021, 11:59
Kudos
Bookmarks
IMO C
probability of getting a correct answer = 1/2
probability of getting a wrong answer = 1/2
probability of getting exactly 4 questions correct out of the 5 = 1/2 * 1/2 * 1/2 * 1/2 * 1/2 = 1/32
there are 5 ways of getting 4 right and 1 wrong answer
=> total = 5 * 1/32 = 5/32
probability of getting a correct answer = 1/2
probability of getting a wrong answer = 1/2
probability of getting exactly 4 questions correct out of the 5 = 1/2 * 1/2 * 1/2 * 1/2 * 1/2 = 1/32
there are 5 ways of getting 4 right and 1 wrong answer
=> total = 5 * 1/32 = 5/32
