Question 189541: 4) I can only use the 8 rules of inference.
1. ~(S v R)
2. B → (S v R)
3. B v P
4. ~Q v B / P • ~Q
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Answer by jim_thompson5910(35256) (Show Source):
You can put this solution on YOUR website! Unfortunately, this proof isn't entirely complete (it needs a rule that you cannot use...), but it is still correct nonetheless
1. ~(S v R)
2. B -> (S v R)
3. B v P
4. ~Q v B / P & ~Q
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5. ~B 2,1 Modus Tollens
6. P 3,5 Disjunctive Syllogism
7. ~Q 4,5 Disjunctive Syllogism
8. P & ~Q 6,7 Conjunction
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