Homework Help: Math

Posted by B.B. on Tuesday, July 21, 2009 at 1:22pm.

Determine the validity of the argument> Martians are green. Roger is not green. Therefore Roger is not a Martian. I say this is valid. Is this correct?

Math - DrBob222, Tuesday, July 21, 2009 at 1:24pm
I agree but get a third opinion.

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