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Positive Integers...

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Intern
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Joined: 30 Sep 2008
Posts: 11
Positive Integers... [#permalink]

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New post 11 Feb 2009, 03:45
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

3.How many 3 digit positive integers exists when divided by 7 leave a remainder of 5 ??

A.128 B.142 C.143 D.141 E.129

Note > I got A and E as a final solutions...But only allowed to choose one...will wait for your comments..
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CEO
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Joined: 17 Nov 2007
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Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40
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Re: Positive Integers... [#permalink]

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New post 11 Feb 2009, 03:55
E

1) 3 digits numbers: 100 - 999
2) 3 digits numbers with boundaries that satisfy n=7k+5 condition: 103 - 999
3) N=(999-103)/7+1=128+1=129
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Intern
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Joined: 30 Sep 2008
Posts: 11
Re: Positive Integers... [#permalink]

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New post 11 Feb 2009, 08:36
super...u AMAZING ... TX for all you help.

Kishan
Re: Positive Integers...   [#permalink] 11 Feb 2009, 08:36
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