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.
Nov 2007:30 AM PST
-08:30 AM PST
Learn what truly sets the UC Riverside MBA apart and how it helps in your professional growth
Nov 2211:00 AM IST
-01:00 PM IST
Do RC/MSR passages scare you? e-GMAT is conducting a masterclass to help you learn – Learn effective reading strategies Tackle difficult RC & MSR with confidence Excel in timed test environment- Nov 23
11:00 AM IST
-01:00 PM IST
Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease. 
Nov 2510:00 AM EST
-11:00 AM EST
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.
30 Jun 2025, 08:00
Kudos
Bookmarks
D
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:
80% (01:50) correct
20%
(02:20)
wrong
based on 729
sessions
History
Date
Time
Result
Not Attempted Yet
At a wildlife reserve, two tracking sessions were conducted to study 16 tagged animals. In each session, the animals were randomly grouped into 8 pairs, and in each pair, one animal was observed as dominant and the other as subordinate. Of the animals that were subordinate in the first session, 5 were also subordinate in the second session. How many animals were dominant in both sessions?
(A) 2
(B) 3
(C) 4
(D) 5
(E) 6
(A) 2
(B) 3
(C) 4
(D) 5
(E) 6
|
30 Jun 2025, 08:30
Kudos
Bookmarks
Bunuel
GMAT Club Official Explanation:
In each session, 16 animals were placed into 8 pairs, so exactly 8 animals were observed as dominant and 8 as subordinate.
In the second session, 8 animals were subordinate. Of those, 5 had already been subordinate in the first session.
That means the other 3 subordinate animals in the second session must have been dominant in the first session.
So, out of the 8 animals that were dominant in the first session, 3 became subordinate in the second, leaving 8 - 3 = 5 animals that were dominant in both sessions.
Answer: D.
General Discussion
30 Jun 2025, 08:10
Kudos
Bookmarks
(D). 5 In first session: 8 subordinate animals, of these 8, 5 were subordinate again → so 3 of them became dominant in second session. Therefore, in Second session has 8 dominant has 3 of these are from the subordinate group of session 1, so dominants who were also dominant in session 1 = 8 – 3 = 5.
Bunuel
