GATE CSE 2026 Session 2 Q5: Logical consequence of 'When it is raining, peacocks dance'

'When it is raining, peacocks dance.'

Based only on this sentence, which one of the following options is necessarily true?

Try it: multiple choice: exactly one correct option

Wrong answer costs 1/3 mark in GATE.

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Answer: C (official GATE 2026 final answer key)

Concept used: An implication $p \to q$ is equivalent only to its contrapositive $\lnot q \to \lnot p$ .

First step: Write the sentence as raining → dance, then check which option is the contrapositive rather than the converse or inverse.

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Source: official GATE 2026 Session 2 CS question paper and final answer key, organised by IIT Guwahati. Question paper · Answer key