Posted by Jen on Monday, July 11, 2011 at 11:12pm.
Determine if the argument is valid or invalid. Give a reason to justify answer.
If the bell rings, then we answer the door.
The bell rings.
We answer the door.

Mathgeometry  Max, Monday, July 11, 2011 at 11:48pm
Yes, it is valid, according to the law of detachment. If the first and second premise are true, then the third is true.

Mathgeometry  Jen, Monday, July 11, 2011 at 11:51pm
Oh okay now I understand. Thank you :)
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