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median /mean/range ds

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Director
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median /mean/range ds [#permalink] New post 13 Jan 2006, 05:14
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
What is the average of three numbers?

1) The range of the three numbers is 5

2) the median of the three numbers is 5
VP
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 [#permalink] New post 13 Jan 2006, 11:05
Must be E.

1) Range = 5. INSUFF to find MEAN.
2) Median = 5. INSUFF to find MEAN.

(1) & (2),

Still insuff -> (2,5,7) (3,5,8)...... several egs that satisfy the condition.
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 [#permalink] New post 13 Jan 2006, 12:36
E

St1: Clearly INSUFF

St2: Clearly INSUFF

Combined:

Numbers are x,5,y

The list could be x could be 0 to 5 and y could be from 5 to 10. So INSUFF
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VP
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 [#permalink] New post 13 Jan 2006, 13:47
I, II ...can't find mean using either of these.

I + II -> Gives the list of numbers as X 5 Y, where x,y could be (1,6), (2,7), (3,8)...INSUFF.

Hence, E.
Director
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 [#permalink] New post 13 Jan 2006, 17:57
E it is..
Stmt 1: Insuff... we dont know the wht the exact numbers are.We just know the difference
Stmt 2: we know the middle number , but not the other nos.
Combine and still we dnt know the 2 nos
so E
  [#permalink] 13 Jan 2006, 17:57
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