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# Is the range of the set of numbers {j, k, m, n, p} greater

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Manager
Joined: 18 Jun 2011
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Is the range of the set of numbers {j, k, m, n, p} greater [#permalink]

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20 Jun 2011, 20:48
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Is the range of the set of numbers {j, k, m, n, p} greater than 5?

(1) k – n > 5

(2) k is the greatest number in the set.
[Reveal] Spoiler: OA

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20 Jun 2011, 22:23
The answer is A, because range of the set has to be equal or greater than difference between any two numbers in the set. As per (1), since difference between two numbers is > 5, so the range is also > 5.

(2) does not give information about the value of k and the other numbers apart from k, So insufficient.
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23 Jun 2011, 03:37
a 1,2,8,8,8 or so. since difference between 2 elements is >5. means range will be >5.Sufficient.

b no clue about the values. Not sufficient.

A it is.
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Manager
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24 Jun 2011, 15:43
subhashghosh wrote:
The answer is A, because range of the set has to be equal or greater than difference between any two numbers in the set. As per (1), since difference between two numbers is > 5, so the range is also > 5.

(2) does not give information about the value of k and the other numbers apart from k, So insufficient.

hi, is this " because range of the set has to be equal or greater than difference between any two numbers in the set." a rule?

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24 Jun 2011, 17:46
1. Sufficient

as we distance between two numbers in the set >5, Range will always be >5

2. Not sufficient

we know dont know anything about the values of these numbers . so not enough to comment about range.

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Re: Range - DS   [#permalink] 24 Jun 2011, 17:46
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