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27 Jun 2006, 13:14
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If set S = {7, y, 12, 8, x, 9}, is x + y less than 18?
(1) The range of set S is less than 9.
(2) The average of x and y is less than the average of set S.
I'm getting B, but want to check. No OA
(1) The range of set S is less than 9.
(2) The average of x and y is less than the average of set S.
I'm getting B, but want to check. No OA
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
27 Jun 2006, 13:31
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(B)
#1. Insufficient as we don't have Max or Min of the set.
#2. (x + y)/2 < (7 + 12 + 8 + 9 + x + y)/6
=> (x + y) < 12 + (x + y)/3
=> (x + y) < 12*3/2 = 18.
Sufficient.
#1. Insufficient as we don't have Max or Min of the set.
#2. (x + y)/2 < (7 + 12 + 8 + 9 + x + y)/6
=> (x + y) < 12 + (x + y)/3
=> (x + y) < 12*3/2 = 18.
Sufficient.
28 Jun 2006, 02:22
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B.
1) Range is 9. X and Y can be anything.
2) (x+y)/2 (x+y)/2 (x+y) < 18
1) Range is 9. X and Y can be anything.
2) (x+y)/2 (x+y)/2 (x+y) < 18
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
