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 2512:30 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.
25 Dec 2015, 10:31
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:
70% (01:13) correct
30%
(01:12)
wrong
based on 225
sessions
History
Date
Time
Result
Not Attempted Yet
Which of the following cannot be the median of five positive integers a, b, c, d, and e?
(A) a
(B) d + e
(C) b + c + d
(D) (b + c + d) / 3
(E) (a + b + c + d + e) / 5
Sent from my iPhone using Tapatalk
(A) a
(B) d + e
(C) b + c + d
(D) (b + c + d) / 3
(E) (a + b + c + d + e) / 5
Sent from my iPhone using Tapatalk
25 Dec 2015, 20:22
Kudos
Bookmarks
sara86
Hi,
lets see the choices one by one..
(A) a
if the numbers in ascending order are d,e,a,b,c... a is the median
(B) d + e
if d and e are the two smallest numbers and say c =d+e, rest a and b are the largest two numbers or equal to c..
ascending order will be.. d,e,c,a,b.. or d,e,d+e,a,b.... d+e is the median
(C) b + c + d..
since there are 5 numbers, third number will be the median, so an integer equal to sum of three integers cannot be the median..
b+c+d will be bigger than atleast three positive integers b,c, and d.. so b+c+d cannot be the median
(D) (b + c + d) / 3
alet a be the smallest, e be the largest and b,c,d be same positive int.. (b + c + d) / 3 will be the median
(E) (a + b + c + d + e) / 5
let all numbers be same or the average of numbers be same as the median.. (a + b + c + d + e) / 5 will be the median
ans C
25 Dec 2015, 21:39
Kudos
Bookmarks
sara86
Note that you are not given that the numbers are arranged in ascending order. They could be any way when arranged in ascending order. Keeping this in mind, try to find easy ways of getting the median.
(A) a
a could be the middle number
(B) d + e
Middle number could be other than d and e and d and e could be the numbers smaller than the middle numbers e.g.
1 , 1, 2, 2, 2
- Median is 2 which is 1 + 1
(D) (b + c + d) / 3
Avg of 3 numbers can certainly be the median - say all numbers are equal: 2, 2, 2, 2, 2 - median is 2 - avg of any 3 numbers
(E) (a + b + c + d + e) / 5
Avg of all 5 numbers can certainly be the median - say all numbers are equal: 2, 2, 2, 2, 2 - median is 2 - avg of all 5 numbers
(C) b + c + d
Now, you don't need to worry about (C) and you can just mark it but note why it cannot be the median.
Out of 5 positive numbers, median will be the middle number. b , c or d cannot be the middle number. So either a or e will be the median. Two numbers will be smaller than (or equal to) the median and two numbers will be greater (or equal to). So even if you pick both numbers which are smaller than the median, you will still need to pick one which is equal or greater. So sum of 3 numbers will certainly be greater than the median.
Answer (C)
