alleryIf the lamp is on, the switch is pressed. The switch is pressed. So the lamp is on. This is
Aa sound deduction
Bmodus ponens
Cmodus tollens
Da formal fallacy
Answer & Solution
Correct answer: D. a formal fallacy
The switch being pressed does not guarantee the lamp is on, so this affirms the consequent.
Keep practising Statement and Conclusion
Browse all Statement and Conclusion questions for RRB NTPC, or explore more Reasoning topics.
Related questions
Under logical definitions, what condition makes a deductive argument sound?Either the exam is today or tomorrow. It is not today. Conclusion: it is tomorrow.If a number is divisible by 4, it is even. 14 is even. Conclusion: 14 is divisible by 4.Statements: All players are tall. No tall person is shy. Conclusion: No player is shy. TheStatements: No dog is a cat. Some cats are pets. Conclusion: No pet is a dog. The conclusiAll unicorns can fly. Charlie is a unicorn. So Charlie can fly. This argument isHow correct deductive reasoning should proceed is studied byIs it correct that deduction always goes from general to particular?