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PHIL109007 102218

Total questions: 4

Worksheet time: 4mins

Name
Class
Date
1.

Identify what error, if any, makes the following syllogism invalid:

Some people do not have confidence in themselves

All people are of great worth

Some people of great worth do not have confidence in themselves

a)

Undistributed middle term

b)

Illicit major term

c)

Illicit minor term

d)

There is no error, the syllogism is valid

2.

Identify what error, if any, makes the following syllogism invalid:

Some rich people are committed to justice.

Some rich people ignore the poor.

Some people who ignore the poor are committed to justice.

a)

Undistributed middle term

b)

Illicit major term

c)

Illicit minor term

d)

No error, the syllogism is valid

3.

Identify what error, if any, makes this syllogism invalid:

Some professors are not physically fit.

No lazy person is physically fit.

Some professors are lazy.

a)

Undistributed middle term

b)

Illicit major term

c)

Two negative premises

d)

No error, the syllogism is valid

4.

Is it possible for all three terms to be distributed in a categorical syllogism?

a)

Yes

b)

No