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M05#37

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Manager
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Affiliations: CFA Level 2 Candidate
Joined: 29 Jun 2009
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Schools: RD 2: Darden Class of 2012
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M05#37 [#permalink] New post 30 Oct 2009, 11:57
Is the average of a set of 5 distinct positive integers {a,b, 4, 6, 2} greater than the median?

1.the highest number in the set is 6
2. the lowest number in the set is 2

OA is C - however I think it is E.

To make matters more confusing the official answer says this

Statements (1) and (2) combined are insufficient.

The correct answer is C.
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Re: M05#37 [#permalink] New post 30 Oct 2009, 21:58
hogann wrote:
Is the average of a set of 5 distinct positive integers {a,b, 4, 6, 2} greater than the median?

1.the highest number in the set is 6
2. the lowest number in the set is 2

OA is C - however I think it is E.

To make matters more confusing the official answer says this

Statements (1) and (2) combined are insufficient.

The correct answer is C.


It should be C:

1. A & B could be either 1 or 3 or 5. Insuff.
2. A > 2 & B > 2. It could be 10, 20, 100....who knows. Insuff.

Combined: Either a = 3 & b = 5 OR, a = 5 & b = 3. Suff.
Re: M05#37   [#permalink] 30 Oct 2009, 21:58
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