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Guest Message by DevFuse
 

queenofshire405

Member Since 22 Sep 2013
Offline Last Active Sep 23 2013 04:03 AM
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Topics I've Started

Logic problems please help!

22 September 2013 - 04:26 AM

Arguments, Validity, and Soundness 
 
For the following prompts, determine the properties that apply to each prompt (if any). Highlight or put in bold “yes” if the prompt does possess the characteristic listed, and highlight or put in bold font “no” if not.
 
1. Thanksgiving is coming soon. Therefore, it’s October.
 
Argument? Yes No
 
Valid? Yes No
 
Sound? Yes No
 
2. Barack Obama is a man. All men are mortal. Therefore Barack Obama is mortal.
 
Argument? Yes No
 
Valid? Yes No
 
Sound? Yes No
 
 
Symbolization 
 
Please symbolize the following English sentences into logical notation. Place your answer below each respective question. 
 
3. HANNAH and MIGUEL will volunteer this weekend if and only if CHRIS can’t volunteer this weekend.
 
4. The SUN is shining if there are no CLOUDS in the sky.
 
Well-formed-formulas (WFFs) 
 
Determine whether each of the formulae below, individually, are well formed or not. If the formula is well formed, highlight or put “wff” in bold font. If the formula isn’t well formed, put “not a wff” in bold font or highlight it.
 
5. H & -(-R & M)
 
WFF Not a WFF
 
6. S &  (P  N)
 
WFF Not a WFF
 
 
Highlight (using the “highlighter” tool in your word processing program) the main logical operator of the following formula:
 
- ((G & J) & S)