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Question No. 9
What rules of inference are used in this
argument? It is either colder than Kashmir
today or the pollution is harmful. It is hotter
than Kashmir today. Therefore, the pollution is
harmful.
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Answer:
Implication: It is one of the logical connectives which can be represented as P → Q. It is a Boolean expression.
Converse: The converse of implication, which means the right-hand side proposition goes to the left-hand side and vice-versa. It can be written as Q → P.
Contrapositive: The negation of converse is termed as contrapositive, and it can be represented as ¬ Q → ¬ P.
Inverse: The negation of implication is called inverse. It can be represented as ¬ P → ¬ Q.
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