The contrapositive of if p then q is:
AIf not q then not p
BIf q then p exactly
CIf p then not q ever
DIf not p then not q
Answer & Solution
Correct answer: A. If not q then not p
1. Both statements carry the same meaning.
2. Negate and swap the parts.
3. So it is if not q then not p.
_Source: NCERT Class 11 Mathematics, Chapter 14, Mathematical Reasoning._
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