Statement: Some birds are goats. Some goats are horses. Some horses are lions. Some lions are tigers. Conclusions: I. Some tigers are goats. II. No tiger is goat. III. Some lions are birds. IV. No lion is bird.

Only either I or II follow
Only either III or IV follows
Only either I or II and either III or IV follow
Only I and III follow

Correct Answer: Only either I or II and either III or IV follow

Explanation:

I- type statements can't be combined. However, II and II from a complementary I-E pair. So do III and IV Hence either I or II and either III or IV follows.

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More Questions from Syllogism

Statement: All papers are bottles. All bottles are cups. Some cups are jugs. Some jugs are plates. Conclusions: I. Some plates are cups. II. Some plats are bottle. III. Some cups are papers. IV. Some bottles are papers.
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Statement: All chairs are keys. All keys are balloons. Some balloons are mirrors. Some mirrors are desks. Conclusions: I. Some desks are keys. II. Some balloons are mirrors. III. Some mirrors are balloons.
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