Chapter 7.3 UNCP Robeson Community College PHILOSOPHY 1010 - ALL ANSWERS ARE CORRECT
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Course
PHILOSOPHY 1010
Institution
PHILOSOPHY 1010
Exercise 7.3A Problem 1
Argument is valid!
You are correct! The argument is valid. There is no row on which the premises
are all true and the conclusion is false.
Your truth table:
A B | A ∨ B, ~A ∴ B
----|---------------
T T | T F T
T F | T F F
F T | T T T
F F | F T F
Exercise 7.3A ...
chapter 73 uncp robeson community college philosophy 1010
exercise 73a problem 1 argument is valid you are correct the argument is valid there is no row on which the premises are all true and th
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Exercise 7.3A Problem 1
Argument is valid!
You are correct! The argument is valid. There is no row on which the premises
are all true and the conclusion is false.
Your truth table:
A B | A ∨ B, ~A ∴ B
----|---------------
T T | T F T
T F | T F F
F T | T T T
F F | F T F
Exercise 7.3A Problem 2
Argument is valid!
You are correct! The argument is valid. There is no row on which the premises
are all true and the conclusion is false.
Your truth table:
F G | F → G, F ∴ G
----|---------------
T T | T T T
T F | F T F
F T | T F T
F F | T F F
Exercise 7.3A Problem 3
, Correct!
You are correct! Row 4 shows that the argument is invalid! On this row of the
truth table, the premises of the argument are true and the conclusion false.
Your truth table:
A B | ~A ∨ ~B, ~B ∴ ~~A
----|-------------------
T T | F F F F TF
T F | F T T T TF
F T | T T F F FT
F F | T T T T FT
Exercise 7.3A Problem 4
Correct!
You are correct! Row 1 shows that the argument is invalid! On this row of the
truth table, the premises of the argument are true and the conclusion false.
(There are other invalidating rows as well that you might try to find.)
P R | ~P → ~R ∴ ~(P → R)
----|----------------------
T T | F T F F T
T F | F T T T F
F T | T F F F T
F F | T T T F T
Exercise 7.3A Problem 5
Argument is valid!
You are correct! The argument is valid. There is no row on which the premises
are all true and the conclusion is false.
Your truth table:
X Y | ~(X → Y) ∴ ~X → ~Y
----|----------------------
T T | F T F T F
T F | T F F T T
, F T | F T T F F
F F | F T T T T
Exercise 7.3A Problem 6
Argument is valid!
You are correct! The argument is valid. There is no row on which the premises
are all true and the conclusion is false.
Your truth table:
E D | E ∴ D ∨ E
----|-----------
T T | T T
T F | T T
F T | F T
F F | F F
Exercise 7.3A Problem 7
Argument is valid!
You are correct! The argument is valid. There is no row on which the premises
are all true and the conclusion is false.
Your truth table:
A B | A ∙ B ∴ B
----|-----------
T T | T T
T F | F F
F T | F T
F F | F F
Exercise 7.3A Problem 8
Correct!
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