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Discussion

Statements: Some rats are cats. Some cats are dogs. No dog is cow.

Conclusions:

1. No cow is cat.

2. No dog is rat.

3. Some cats are rats.

  • A.Only (1)
  • B.Only (1) and (2)
  • C.Only (1) and (3)
  • D.Only (3)

Answer: D

Correct answer: Only (3)

Some rats are cats gives its converse, some cats are rats - conclusion 3. Conclusion 1 needs cows excluded from cats, whereas only dogs are excluded; and conclusion 2 crosses two particulars.

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