Q3
Rules of inference are 1. applied when the main operators are in use. 2. nine in number. 3. applied only to entire statements. 4. not applied to entire statements. Select the correct answer:
A.
1, 2 and 3
AnswerB.
2, 3 and 4
C.
1, 3 and 4
D.
All of these
Answer: Option A
Solution
Answer: Option A
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