|
|
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.
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:
38% (02:27) correct
62%
(02:34)
wrong
based on 296
sessions
History
Date
Time
Result
Not Attempted Yet
A survey is done in am office among 120 people to know how many of them like their boss. 50 people not only like their boss but also admire him. If an employee is selected at random, is the probability that he neither likes his boss nor admires him less than 20%?
1. 10 employees do not like their boss
2. 80% of the employees admire their boss
1. 10 employees do not like their boss
2. 80% of the employees admire their boss
31 Jul 2018, 01:14
Kudos
Bookmarks
ankit2601
SO 4 groups -
1) Only Like boss - L
2) Only admire boss - A
3) both - B
4) neither - N
L+A+B+N=120
B=50
IS N< 20% 0r 20*120/100 that is ' Is N < 24?"
1. 10 employees do not like their boss
so A+N=10 therefore \(\leq{10}\)
ans YES
suff
2. 80% of the employees admire their boss
so remaining 20 5 can be all who do not like also, that is L is sub set of A, then N=20%....NO
if even any one of remaining likes then N<20%.. YES
insuff
A
Attachments
6.png [ 3.3 KiB | Viewed 9425 times ]
General Discussion
09 Aug 2018, 08:53
Kudos
Bookmarks
chetan2u
Sir,
i couldn't understand how it could be B+N =10, IMO it should be A+N =10
