Subject: Philosophy    / Formal Logic
Question

Question 1(10 points)
Question 1 Saved
Consider the following argument:
(i) Hugo Chavez is the current president of the United States.
(ii) The current president of the United States lives in the White House.
Therefore, (iii) Hugo Chavez lives in the White House.

Which of the following is true of the argument? It is:
Question 1 options:
both valid and sound.
neither valid nor sound.
valid, but not sound.
sound, but not valid.

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Question 2(10 points)
Question 2 Saved
Consider the following argument:

(i) If Freddie is a living human, then Freddie has a heart.
(ii) If Freddie has a heart, then Freddie has at least one organ.
Therefore, (iii) if Freddie is a living human being, then Freddie has at least one organ.

Which of the following is true of the argument? It is:
Question 2 options:
both valid and sound.
valid, but not sound.
sound, but not valid.
neither valid nor sound.

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Question 3(10 points)
Question 3 Saved
Consider the following argument:

(i) If Freddie is an alligator, then Freddie is a reptile.
(ii) If Freddie is a reptile, then Freddie is not a mammal.
Therefore, (iii) if Freddie is an alligator, then Freddie is not a mammal.

Which of the following is true of the argument? It is:
Question 3 options:
both valid and sound.
valid, but not sound.
sound, but not valid.
neither valid nor sound.

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Question 4(10 points)
Question 4 Unsaved
Consider the following argument:

If Joe were black he would be dark, not light. But Joe is light; he only weighs 90 pounds. So Joe is not black.

Which of the following informal fallacies is most clearly present in the above argument?
Question 4 options:
False dichotomy
Division
Appeal to ignorance
Equivocation

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Question 5(10 points)
Question 5 Unsaved
Consider the following argument:

Joe never lies. If you do not believe me, ask Joe. He will tell you the truth.

Which of the following informal fallacies is most clearly present in the above argument?
Question 5 options:
Begging the question
Division
Equivocation
Straw man

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Question 6(10 points)
Question 6 Unsaved
Give an example of an argument that is valid, but not sound and has the conclusion “All monkeys are primates.” Your argument must be non-circular and have exactly two premises.
Question 6 options:

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Question 7(10 points)
Question 7 unsaved
Give an example of an argument that is both valid and sound and uses the premise “If apples are fruit, then apples contain seeds.” Your argument must be non-circular and have exactly two premises.

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