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GMATPrep - DS - Mean

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Senior Manager
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GMATPrep - DS - Mean [#permalink]

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New post 29 Jul 2006, 17:00
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A
B
C
D
E

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Senior Manager
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New post 29 Jul 2006, 17:23
Clear D.

S1. Worst scenario : 10,20,30,40,50 mean = 30 sufficient
S2. 160/5 =32 sufficient.

this is the easiest one I've ever seen..
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The only thing that matters is what you believe.

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New post 29 Jul 2006, 20:56
1. 5 different positive integers, each a multiple of 10
therefore the nos. are 10,20,30,40,50. Mean is 30 -- SUFF

2. Sum = 160, Average = 160/5 = 32 > 30 -- SUFF

Answer : D
Senior Manager
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New post 30 Jul 2006, 09:49
Yes it is D, I made the stupid mistake of taking 0 as a multiple too (did not read POSITIVE integer)
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New post 31 Jul 2006, 23:25
Clear D.

The sum has to be atleast 150

1) The least multiples of 10 are
10 + 20 + 30 + 40+ 50 = 150
Suff

2) Sum of numbers is 160. Av >30
Suff
  [#permalink] 31 Jul 2006, 23:25
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GMATPrep - DS - Mean

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