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Categorical Claims Quiz II
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1
Consider the following example and decide what the subject term is and what the predicate term is. "Some disks are storage devices that hold more than 100 megabytes of data."
A)Subject: storage devices. Predicate: disks that hold more than 100 megabytes of data.
B)Subject: disks. Predicate: storage devices that hold more than 100 megabytes of data.
C)Subject: storage devices that hold more than 100 megabytes of data. Predicate: disks.
D)Subject: disks that hold more than 100 megabytes of data. Predicate: storage devices.
2
Consider the following claim and determine which of the types of claims below it matches: "No birds are mammals."
A)E
B)A
C)I
D)O
3
Consider the following claim and determine which of the types of claims below it matches: "Some birds can't fly."
A)A
B)E
C)O
D)I
4
Consider the following claim and determine which of the types of claims below it matches: "All birds have hollow bones."
A)O
B)A
C)E
D)I
5
Consider the following claim and determine which of the types of claims below it matches: "Some birds can swim."
A)A
B)I
C)E
D)O
6
Which of the following types of claims are correctly called "affirmative?"
A)A and I
B)I and O
C)E and A
D)O and E
7
Which of the following types of claims are correctly called "negative?"
A)I and E
B)E and O
C)O and A
D)A and I
8
Which of the following is the best definition of "equivalent categorical claims?"
A)Two claims are equivalent if they have the same subject or predicate terms.
B)Two claims are equivalent if they have the same subject and predicate terms.
C)Two claims are equivalent if and only if they would be true in exactly the same situations.
D)Two claims are equivalent if and only if they have the same subject and predicate terms.
9
Which is the best translation for this claim: "Only cable modems are fast enough for online gaming."
A)All modems fast enough for online gaming are cable modems.
B)All cable modems are fast enough for online gaming.
C)Some cable modems are modems fast enough for online gaming.
D)Some cable modems are not modems fast enough for online gaming.
10
Which is the best translation for this claim: "Motivated students are the only students who should take online classes."
A)All students who should take online classes are motivated students.
B)Some motivated students are students who should take online classes.
C)All motivated students are students who should take online classes.
D)Some students who should take online classes are motivated students.
11
Which of the following is true of contrary claims?
A)They always have opposite truth values.
B)They can both be false but they can't both be true.
C)They can both be true and false.
D)They can both be true but they can't both be false.
12
Which of the following is true of subcontrary claims?
A)They can both be false but they can't both be true.
B)They can both be true and false.
C)They always have opposite truth values.
D)They can both be true but they can't both be false.
13
Which of the following is true of contradictory claims?
A)They can both be false but they can't both be true.
B)They can both be true and false.
C)They can both be true but they can't both be false.
D)They always have opposite truth values.
14
Which of the following is the best description of how to perform the operation of conversion?
A)Switch the position of the subject term and the predicate term.
B)Switch the position of the subject and predicate terms and then replace both terms with their compliments.
C)Change the claim from affirmative to negative (or from negative to affirmative) and then replace the predicate term with its complement.
15
Which of the following types of claims can you perform Conversion on and end up with a logically equivalent claim?
A)E and I
B)A, E, I, and O
C)A and E
D)I and O
16
Which of the following is the best description of how to perform the operation of Obversion?
A)Switch the position of the subject term and the predicate term.
B)Switch the position of the subject and predicate terms and then replace both terms with their compliments.
C)Change the claim from affirmative to negative (or from negative to affirmative) and then replace the predicate term with its compliment.
17
Which of the following types of claims can you perform Obversion on and end up with a logically equivalent claim?
A)A and E
B)I and O
C)E and I
D)A, E, I, and O
18
Which of the following is the best description of how to perform the operation of contraposition?
A)Change the claim from affirmative to negative (or from negative to affirmative) and then replace the predicate term with its complement.
B)Switch the position of the subject and predicate terms and then replace both terms with their complements.
C)Switch the position of the subject term and the predicate term.
19
Which of the following types of claims can you perform Contraposition on and end up with a logically equivalent claim?
A)E and I
B)A, E, I, and O
C)A and O
D)I and O





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