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Is rs=rx-2? 1. r is odd 2. x=s+2

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Is rs=rx-2? 1. r is odd 2. x=s+2 [#permalink] New post 17 May 2010, 13:44
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Is rs=rx-2?

1. r is odd
2. x=s+2

Answer B.
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Re: DS - Please explain [#permalink] New post 17 May 2010, 13:50
agnok wrote:
Is rs=rx-2?

1. r is odd
2. x=s+2

Answer B.


Is there some thing missing in this question ?

Anyway, Question is asking whether 2= rx-rs ?

1. Clearly insufficient

2. putting the value of x = > 2= rs + 2r -rs = > 2= 2r

which means the st 2 will be sufficient if we know that r =1 but else its not and hence answer should be E and not B
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Re: DS - Please explain [#permalink] New post 24 Jun 2010, 08:22
Thanks nitishmahajan! I see it
Re: DS - Please explain   [#permalink] 24 Jun 2010, 08:22
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Is rs=rx-2? 1. r is odd 2. x=s+2

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