12q12

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Source: — Data Sufficiency |

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by stop@800 » Fri Oct 17, 2008 12:11 am
IMO A

OA please?
will paste explanation after OA

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by stubbornp » Fri Oct 17, 2008 1:22 am
oa A

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by stop@800 » Fri Oct 17, 2008 2:40 am
A is the question itself
just take r on other side

B tells that
r<s or r < -s
so we can not find the answer from this

hence A

Hope this helps