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Discussion

In the question below is given a statement followed by two conclusions numbered I and II.

Give answer

(A) If only I follows
(B) If only II follows
(C) If either I or II follows
(D) If neither I nor II follows
(E) If both I and II follow.

Statement -

I. All dogs are cats.
II. All rats are cats.

Conclusion -

I. No dogs are cat.
II. Some cat are rat.

  • A.Only I follows
  • B.Only II follows
  • C.Either I or II follows
  • D.Neither I nor II follows

Answer: B

Correct answer: Only II follows

All rats are cats, so its converse holds: some cats are rats - conclusion II. Conclusion I contradicts the first statement, which says all dogs are cats. Only II follows.

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