题目内容

What rule of inference is used in the argument “If I go swimming, then I will stay in the sun too long. If I stay in the sun too long, then I will sunburn. Therefore, if I go swimming, then I will sunburn.” ( )

A. Modus ponens
B. Modus tollens
C. Hypothetical syllogism
Disjunctive syllogism

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What rule of inference is used in the argument “It is either hotter than 100 degrees today or the pollution is dangerous. It is less than 100 degrees outside today. Therefore, the pollution is dangerous.”( )

A. Modus ponens
B. Modus tollens
C. Hypothetical syllogism
Disjunctive syllogism

What rule of inference is used in the argument “If it snows today, the university will close. The university is not closed today. Therefore, it did not snow today.” ( )

A. Modus ponens
B. Modus tollens
C. Hypothetical syllogism
Disjunctive syllogism

What rule of inference is used in the argument “Linda is an excellent swimmer. If Linda is an excellent swimmer, then she can work as a lifeguard. Therefore, Linda can work as a lifeguard.”( )

A. Modus ponens
B. Modus tollens
C. Hypothetical syllogism
Disjunctive syllogism

What rule of inference is used in the argument “Jerry is a mathematics major and a computer science major. Therefore, Jerry is a mathematics major.” ( )

Addition
B. Simplification
Conjunction
D. Resolution

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