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PHIL109010 032819

Total questions: 4

Worksheet time: 3mins

Name
Class
Date
1.

If this syllogism is not valid, why is it invalid?

All students are important people.

Some important people will do great things.

Some students will do great things.

a)

Valid

b)

Invalid - Illicit major term

c)

Invalid -illicit minor term

d)

Invalid - undistributed middle

2.

If this syllogism is not valid, why is it invalid?

All M are P

Some S are not M

Some S are not P

a)

Valid

b)

Invalid - illicit minor term

c)

Invalid - illicit major term

d)

Invalid - undistributed middle

3.

If this syllogism is not valid, why is it invalid?

All P are M

No M is S

No S is P

a)

Valid

b)

Invalid - illicit minor term

c)

Invalid - illicit major term

d)

Invalid - undistributed middle

4.

True or False?

Some categorical syllogisms with a mood of "III' can be valid.

a)

True

b)

False