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WorksheetsPHIL 109 10/17/23
Total questions: 4
Worksheet time: 2mins
Name
Class
Date
1.
What is the converse of "All dogs are animals"?
a)
All animals are dogs.
b)
All animals are non-dogs.
c)
No dog is an animal.
d)
All non-animals are a non-dog.
2.
What is the obverse of "Some students are slackers"?
a)
Some students are non-slackers.
b)
No student is a slacker.
c)
Some students are not non-slackers.
d)
Some students are not slackers.
3.
What is the contrapositive of "All tuna are fish"?
a)
No tuna are fish.
b)
No non-fish are non-tuna.
c)
All non-tuna are non-fish.
d)
All non-fish are non-tuna.
4.
Which of the following propositions is logically equivalent to "Some people are optimists"?
a)
Some people are non-optimists.
b)
Some people are not non-optimists.
c)
Some non-optimists are non-people.
d)
All people are optimists.
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