Statements: All dogs are mammals. No mammal is a bird. Conclusions: I. No dog is a bird. II. Some birds are not dogs. III. All mammals are dogs. Which conclusions follow? MCQ with Answer and Explanation
Statements: All dogs are mammals. No mammal is a bird. Conclusions: I. No dog is a bird. II. Some birds are not dogs. III. All mammals are dogs. Which conclusions follow?
A. None
B. Only II
C. Only I and II
D. Only I
Answer: Option C
Solution (By JKSSB Mock Tests)
Since all dogs are mammals and no mammal is a bird, no dog is a bird follows. Also, since no dog is a bird, some birds are not dogs follows.
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