If X is the set of prime single-digit numbers and Y is a set containing each of the numbers in set X raised to the power of 2, how much greater is the median of set Y than the median of set X?
A. 2
B. 4
C. 9
D. 13
E. 17
The OA is D.
Why D is the correct answer? Can any expert help me with this PS question please? Thanks.
If X is the set of prime...
This topic has expert replies
-
- Moderator
- Posts: 2205
- Joined: Sun Oct 15, 2017 1:50 pm
- Followed by:6 members
- DavidG@VeritasPrep
- Legendary Member
- Posts: 2663
- Joined: Wed Jan 14, 2015 8:25 am
- Location: Boston, MA
- Thanked: 1153 times
- Followed by:128 members
- GMAT Score:770
Set X [2, 3, 5, 7] Median = (3+5)/2 = 4LUANDATO wrote:If X is the set of prime single-digit numbers and Y is a set containing each of the numbers in set X raised to the power of 2, how much greater is the median of set Y than the median of set X?
A. 2
B. 4
C. 9
D. 13
E. 17
The OA is D.
Why D is the correct answer? Can any expert help me with this PS question please? Thanks.
Set Y [2^2, 3^2, 5^2, 7^2] or [4, 9, 25, 49] Median = (9+25)/2 = 17
17 - 4 = 13. The answer is D
GMAT/MBA Expert
- Scott@TargetTestPrep
- GMAT Instructor
- Posts: 7223
- Joined: Sat Apr 25, 2015 10:56 am
- Location: Los Angeles, CA
- Thanked: 43 times
- Followed by:29 members
We see that X = {2, 3, 5, 7} and Y = {4, 9, 25 49}. Therefore, the median of set X is (3 + 5)/2 = 4, and that of set Y is (9 + 25)/2 = 17. So the median of set Y is 17 - 4 = 13 greater than the median of set X.BTGmoderatorLU wrote:If X is the set of prime single-digit numbers and Y is a set containing each of the numbers in set X raised to the power of 2, how much greater is the median of set Y than the median of set X?
A. 2
B. 4
C. 9
D. 13
E. 17
The OA is D.
Why D is the correct answer? Can any expert help me with this PS question please? Thanks.
Answer: D
Scott Woodbury-Stewart
Founder and CEO
[email protected]
See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews