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D01-23

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Re: D01-23 [#permalink]

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New post 12 Jun 2017, 06:49
lo123 wrote:
I think this is a poor-quality question and I don't agree with the explanation. In the second statement, the median can be 1/2 so we can say it is less than1/5 and the median can also be 1/5 then it is not less than 1/5. so we can't be sure.


Please re-read the solution carefully.

The question asks: is the median of the set less than 1/5?

From (2) the median could be 1/2, 1/5 or (1/5+1/2)/2=7/20. None of the possible values is less than 1/5. So, we have a NO answer to the question. Sufficient.

P.S. HOW is 1/2 LESS than 1/5?
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Re: D01-23 [#permalink]

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New post 20 Aug 2017, 09:50
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I think this is a poor-quality question and I don't agree with the explanation. For GMAT or OTHERWISE, a SET never has any repetitions. You should have mentioned a LIST instead of a SET in this question.

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New post 20 Aug 2017, 10:57
Indeed a high quality question that tests our skills of understanding prime numbers , reciprocals and divisibility.

Though I am not qualified enough to pass any comment or remark on any question, but one thing I am sure is that almost all the questions of Bunuel are truly excellent...

Sent from my Lenovo TAB S8-50LC using GMAT Club Forum mobile app

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New post 21 Aug 2017, 03:43
sharmapallavi wrote:
I think this is a poor-quality question and I don't agree with the explanation. For GMAT or OTHERWISE, a SET never has any repetitions. You should have mentioned a LIST instead of a SET in this question.


Yes, you are right. Edited as suggested. Thank you.
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Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
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Re: D01-23   [#permalink] 21 Aug 2017, 03:43

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