Chapter 8: CATEGORICAL PROPOSITIONS
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No. of Questions = 18

In this exercise, you will be given a categorical proposition, and asked to decide which other proposition bears a specified logical relationship to the first one, by choosing statement 2, 3, or 4.

For example:

1) All soldiers who win Purple Heart awards are heroes.
Which of the following is the contradictory of (1)?

2) No soldier who wins a Purple Heart award is a hero.
3) Some soldiers who win Purple Heart awards are nonheroes.
4) Some soldiers who win Purple Heart awards are not heroes.

1 (1) Some distingueshed orators are not silver-haired.
Which of the following is the subcontrary of (1)?
a) Some distinguished orators are silver-haired
b) All distinguished orators are silver-haired
c) No distinguished orator is silver-haired
2 (1) No groundhog saw its shadow last winter.
Which of the following is the contrary of (1)?
a) All groundhogs saw their shadows last winter
b) Some groundhogs did not see their shadows last winter
c) Some groundhogs did not see their shadows last winter
3 (1) All knowledge rests on the evidence of the senses.
Which of the following is the contradictory of (1)?
a) No knowledge rests on the evidence of the senses
b) Some knowledge rests on the evidence of the senses
c) Some knowledge does not rest on the evidence of the senses
4 (1) All bald tires are dangerous .
Which of the following is the converse of (1)?
a) Some bald tires are dangerous
b) All dangerous things are bald tires
c) No dangerous things are bald tires
5 (1) Some diet drinks are caloric.
Which of the following is the contrapositive of (1)?
a) All noncaloric things are diet drinks
b) Some nondiet drinks are noncaloric
c) Some noncaloric things are nondiet drinks
6 (1) Some bicycles are not expensive.
Which of the following is the converse of (1)?
a) Some bicycles are inexpensive
b) Some expensive things are not bicycles
c) All bicycles are expensive
7 (1) Some provisions in the contract are not negotiable.
Which of the following is the obverse of (1)?
a) Some provisions in the contract are nonnegotiable
b) No provisions in the contract are negotiable
c) Some nonnegotiable things are provisions in the contract
8 (1) Some chocolate lovers are addictive personalities.
Which of the following is the contradictory of (1)?
a) All chocolate lovers are addictive personalities
b) No chocolate lovers are addictive personalities
c) Some addictive personalities are chocolate lovers
9 (1) All Type A people are aggressive.
Which of the following is the subaltern of (1)?
a) Some Type A people are not aggressive
b) All nonaggressive people are non-Type A
c) Some Type A people are aggressive
10 (1) Some freckled people are feckless.
Which of the following is the contradictory of (1)?
a) No feckless people are freckled
b) No freckled people are feckless
c) Some nonfeckless people are unfreckled
11 (1) No human-powered aircraft is capable of flying the Atlantic.
Which of the following is the obverse of (1)?
a) Some human-powered aircraft are capable of flying the Atlantic
b) No human-powered aircraft is incapable of flying the Atlantic
c) All human-powered aircraft are incapable of flying the Atlantic
12 (1) Some of my best friends are icthyologists.
Which of the following is the converse of (1)?
a) Some of my best friends are not icthyologists
b) Some icthyologists are my best friends
c) No ichthyologist is my best friend
13 (1) No event in nature is totally random.
Which of the following is the contradictory of (1)?
a) Some events in nature are totally random
b) Some nonevents in nature are totally random
c) All events in nature are totally random
14 (1) Some waiters are not couth.
Which of the following is the contrapositive of (1)?
a) Some waiters are uncouth
b) Some couth people are nonwaiters
c) Some uncouth people are not nonwaiters
15 (1) Some terrorists are not politically motivated.
Which of the following is the contradictory of (1)?
a) All terrorists are politically motivated
b) No terrorists are nonpolitically motivated
c) No terrorists are politically motivated
16 (1) All bachelors are unmarried.
Which of the following is the contrapositive of (1)?
a) No bachelors are married
b) All married people are nonbachelors
c) All unmarried people are nonbachelors
17 (1) No one who has taken Latin is going to commit a non sequitur.
Which of the following is the subaltern of (1)?
a) Some people who have taken Latin are going to commit a non sequitur
b) All people who have not taken Latin are going to commit a non sequitur
c) Some people who have taken Latin are not going to commit a non sequitur
18 (1) Some of my former colleagues were not willing to give my ideas a fair hearing.
Which of the following is the subcontrary of (1)?
a) Some of my former colleagues were unwilling to give my ideas a fair hearing
b) Some people willing to give my ideas a fair hearing were not my former colleagues
c) Some of my former colleagues were willing to give my ideas a fair hearing


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