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If then its contra positive will be:
If $(\sim p \Rightarrow \sim q)$ then its contra positive will be:
- (a)$p \Rightarrow q$
- (b)$q \Rightarrow p$
- (c)$\sim q \Rightarrow p$
- (d)$\sim p \Rightarrow q$
Answer
Answer
AICorrect option: (b)
Answer: (b) $q \Rightarrow p$
The contrapositive of $a \Rightarrow b$ is $\sim b \Rightarrow \sim a$; here $a = \sim p$, $b = \sim q$, so it is $\sim(\sim q) \Rightarrow \sim(\sim p)$, i.e. $q \Rightarrow p$.
From ISC 2023 Computer Science Paper 1, question 1(iv).