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Direction: Accept the factual assumptions required by the question, even if you believe that the statement is false. Answer the question on the basis of the given statement. If the statement “All…

Question and options

Direction: Accept the factual assumptions required by the question, even if you believe that the statement is false. Answer the question on the basis of the given statement.

If the statement “All men desire their own welfare always” is true, then which of the following statements must be false?
  1. There are men who desire their own welfare sometimes.
  2. Some men desire their own welfare always.
  3. There are men who always desire their and others’ welfare.
  4. It is not the case that all men desire their own welfare always.

Answer and explanation

Correct answer: D - It is not the case that all men desire their own welfare always.
The given A-proposition 'all men desire their own welfare always' is directly contradicted by 'It is not the case that all men desire their own welfare always', so that statement must be false. 'There are men who desire their own welfare sometimes' and 'Some men desire their own welfare always' are consistent with it; the statement about others' welfare is undetermined.

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  • CUSAT CAT LLM

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