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If r and s are integers, is r+s divisble by 3? 1) s is

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Manager
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Joined: 13 Sep 2006
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Schools: Olin Business School - Washington University
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If r and s are integers, is r+s divisble by 3? 1) s is [#permalink] New post 06 Oct 2006, 01:04
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If r and s are integers, is r+s divisble by 3?

1) s is divisible by 3
2) r is divisible by 3

Sorry to spoil it but the OA here is C. My gripe is what if s=3 and r=-3? Then 0 is not divisible by 3. I know it's kind of a funky question and some may say "this wouldnt be on the gmat", but this is from the gmat q review! It was an actual gmat question!!
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Director
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Joined: 05 Feb 2006
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Re: This one should be simple...DS [#permalink] New post 06 Oct 2006, 01:10
diegmat wrote:
If r and s are integers, is r+s divisble by 3?

1) s is divisible by 3
2) r is divisible by 3

Sorry to spoil it but the OA here is C. My gripe is what if s=3 and r=-3? Then 0 is not divisible by 3. I know it's kind of a funky question and some may say "this wouldnt be on the gmat", but this is from the gmat q review! It was an actual gmat question!!


0 is divisable by all numbers... ifs s=3 r=-3.... then 0/3=0
SVP
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 [#permalink] New post 06 Oct 2006, 01:49
SimaQ is right.

0/a = a*0 + 0 > The remainder is 0.
Manager
Manager
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Joined: 13 Sep 2006
Posts: 198
Schools: Olin Business School - Washington University
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Kudos [?]: 21 [0], given: 0

 [#permalink] New post 06 Oct 2006, 06:11
You are all much smarter than me! Duly noted - what a crummy question though!
  [#permalink] 06 Oct 2006, 06:11
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If r and s are integers, is r+s divisble by 3? 1) s is

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