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HBSdetermined
01 Sep 2013, 05:21
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D
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Difficulty:
55%
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Question Stats:
62% (01:34) correct
38%
(01:17)
wrong
based on 394
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If set S consists of the numbers w, x, y, z is the range of numbers in the S greater than 5?
(1) The range of any three numbers in the set S is greater than 5.
(2) The positive difference between any two numbers in set S is greater than 3.
(1) The range of any three numbers in the set S is greater than 5.
(2) The positive difference between any two numbers in set S is greater than 3.
01 Sep 2013, 06:04
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If set S consists of the numbers w, x, y, z is the range of numbers in the S greater than 5?
(1) The range of any three numbers in the set S is greater than 5. The range of a subset is less than or equal to the range of the whole set. Therefore the range of S is greater than 5. Sufficient.
(2) The positive difference between any two numbers in set S is greater than 3. Say the numbers in ascending order are {w, x, y, z} --> the range = z-w. Given that z-y>3 and y-w>3. Add this two inequalities: (z-y)+(y-w)>3+3 --> z-w>6. Sufficient.
Answer: D.
(1) The range of any three numbers in the set S is greater than 5. The range of a subset is less than or equal to the range of the whole set. Therefore the range of S is greater than 5. Sufficient.
(2) The positive difference between any two numbers in set S is greater than 3. Say the numbers in ascending order are {w, x, y, z} --> the range = z-w. Given that z-y>3 and y-w>3. Add this two inequalities: (z-y)+(y-w)>3+3 --> z-w>6. Sufficient.
Answer: D.
General Discussion
18 Aug 2025, 06:32
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Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
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