Practice question · Numerical answer
A conditional fails only when it promises something and does not deliver. In how many of the four assignments of truth values to and is false?
Hints
- A conditional fails only when its antecedent holds and its consequent does not.
- That is one row out of four.
Show the answer
1
Why
Exactly one: true with false. In the other three rows the conditional is true, including both rows where is false, which is the result that surprises people.
Practise The Language of Propositional Logic
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More questions on The Language of Propositional Logic
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