Which of the following arguments (i.e., logical calculations) reach logically valid conclusions, and which do not? Which argument utilizes the logical rule of modus ponens?

Question

Which of the following arguments (i.e., logical calculations) reach logically valid conclusions, and which do not? Which argument utilizes the logical rule of modus ponens?

a. If Fred got an A in the course, then he must have done all the work. Fred did get an A in the course, so therefore he didn’t do all the work.

b. If Fred got an A in the course, then he must have done all the work. Fred did get an A in the course, so therefore he must have done all the work.

c. If Fred got an A in the course, then he must have done all the work. Fred did do all the work in the course, so therefore he did get an A.

d. If Fred got an A in the course, then he must not have done all the work. Fred didn’t get an A in the course, so therefore he must not have done all the work.

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Answer 1

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Giải bởi Vietjack

Chọn đáp án B

Which of the following arguments (i.e., logical calculations) reach logically valid conclusions, and which do not? Which argument utilizes the logical rule of modus ponens?

Which one is a well-formed formula for a simple proposition?

Translate the sentence "Dan reads a book and Jane reads a magazine" into a logical notation.

Find one mistake in the statement: "LOGIC deals with meanings in a language system, not with actual behavior of any sort. Logic deals most centrally with senses. The terms ‘logic’ and ‘logical’ do not apply directly to utterances."

Translate the sentence "Charles the singer is living in Canada" into a simple notation.

Which of the following statement is correct?

MODUS PONENS is a rule stating that if a proposition P entails a proposition Q, and P is true, then Q is true.

Which one contains only one morpheme?

Which of the following arguments (i.e., logical calculations) reach logically valid conclusions, and which do not? Which argument utilizes the logical rule of modus ponens?

Which one is a well-formed formula for a simple proposition?

Translate the sentence "Dan reads a book and Jane reads a magazine" into a logical notation.

Find one mistake in the statement: "LOGIC deals with meanings in a language system, not with actual behavior of any sort. Logic deals most centrally with senses. The terms ‘logic’ and ‘logical’ do not apply directly to utterances."

Translate the sentence "Charles the singer is living in Canada" into a simple notation.

Which of the following statement is correct?

MODUS PONENS is a rule stating that if a proposition P entails a proposition Q, and P is true, then Q is true.

Which one contains only one morpheme?

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