Statements: All fish are tortoise. No tortoise is a crocodile. Conclusions: (I) No crocodile is a fish. (II) No fish is a crocodile.
Correct answer: D. Both I and II follow
- A. Only conclusion II follows
- B. Either I or II follows
- C. Neither I nor II follows
- D. Both I and II follow
Explanation
The Venn diagram shows that No crocodile is a fish. If No crocodile is a fish then No fish is a crocodile. Both conclusions I and II follow. Hence, D is the correct option
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About Syllogisms
Syllogisms use categorical statements such as all, some and no to establish relationships between groups. Questions require checking whether conclusions necessarily follow from the premises, often by mental set relationships or Venn diagrams, and distinguishing valid deductions from conclusions that are merely possible.
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