Site MapHelpFeedbackTrue or False
True or False
(See related pages)

II. Use the Venn diagram method to determine whether the following categorical syllogisms are valid or invalid.



1

All good citizens are citizens that vote. Therefore, since some good citizens are immigrant citizens, some immigrant citizens are not citizens that vote.
A)Valid
B)Invalid
2

All soccer players are athletes. All members of the team are soccer players. So all members of the team are athletes.
A)Valid
B)Invalid
3

No Democrats are Libertarians. Some Libertarians are not conservatives. So, some conservatives are not Democrats.
A)Valid
B)Invalid
4

All advocates of the death penalty are pacifists. Thus, since all advocates of the death penalty are academics, all academics are pacifists.
A)Valid
B)Invalid
5

No bookies are hit men. Some hit men are drug traffickers. So, some drug traffickers are not bookies.
A)Valid
B)Invalid
6

No scientists are astrologers. All psychics are scientists. So, some psychics are not astrologers.
A)Valid
B)Invalid
7

Some used car salesmen are cheats. Some cheats are bankers. Therefore, some bankers are used car salesmen.
A)Valid
B)Invalid
8

No activists are anarchists. Some revolutionaries are anarchists. So, some revolutionaries are not activists.
A)Valid
B)Invalid
9

No great writers are apathetic writers. All apathetic writers are narcissistic writers. Hence, no narcissistic writers are great writers.
A)Valid
B)Invalid
10

No accountants are music majors. Some accountants are belly dancers. Thus, some belly dancers are not music majors.
A)Valid
B)Invalid







BasshamOnline Learning Center

Home > Chapter 9 > True or False