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1. Only dragons breathe fire, and all dragons fly. So all
flying dragons breathe fire. We cannot tell.
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2. Some sea creatures are
mammals, and some mammals have well-developed social
structures. So some sea creatures have well-developed social
structures. We cannot tell.
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3. All flying mammals eat insects. Some mammals do
not eat insects. So some mammals do not fly. Yes.
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4. Bats are flying mammals. The Red Baron is a flying mammal. So the
Red Baron is a bat. We cannot tell.
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5. Penguins are found only in Antarctica.
No cichlasomas are found in Antarctica. So penguins are not
cichlasomas. Yes.
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6. All professional athletes are overpaid.
Bruce Jenner is an athlete, but he is not a professional. So he
is not overpaid. We cannot tell.
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7. No genius is tidy. Some children are geniuses. So some
children are not tidy. Yes.
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8. Only hard-workers pass this course. Some of my students are
hard workers. So some of my students will pass this course.
We cannot tell.
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9. None but the beautiful may join the club. I am not
beautiful. All the snobs are in the club. So I am not a snob.
Yes.
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10. Tom and Dick are both singers, but only Tom sings opera.
Only opera singers sing at the Metropolitan, and even some
opera singers don't sing at the Metropolitan. So Dick doesn't
sing at the Metropolitan.Yes.
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