LOGIC MIDTERM 2 EXAM QUESTIONS AND ANSWERS
Affirming the consequent is an invalid argument form - CORRECT ANSWER✅✅True
If an argument is a substitution instance of an invalid form, then it could still be a valid argument -
CORRECT ANSWER✅✅True
The double negation rule states that any statement with the form p v q is logically equivalent to q v p -
CORRECT ANSWER✅✅False
Disjunctive syllogism is a valid argument form - CORRECT ANSWER✅✅True
Any argument that is a substitution instance of a valid argument form is valid - CORRECT
ANSWER✅✅True
It is possible for a valid argument to a be a substitution of an invalid argument form in addition to being
a substitution instance of a valid argument form - CORRECT ANSWER✅✅True
Modus Tollens is a valid argument form - CORRECT ANSWER✅✅True
Destructive Dilemma is an invalid argument form - CORRECT ANSWER✅✅False
Affirming the consequent and denying the antecedent are two example of a valid argument form -
CORRECT ANSWER✅✅False
It is impossible for a valid argument to be a substitution in stance of an invalid argument form -
CORRECT ANSWER✅✅False
One way to refute a constructive or destructive dilemma is to "grasp the dilemma by the horns," which
means torueprove one or both of the conditionals in the first premise is false - CORRECT
ANSWER✅✅True
, Sometimes you must perform the operation of double negation or the operation of commutativity on
the statements in an argument to make the argument fit the pattern of a common argument form -
CORRECT ANSWER✅✅True
Modus Ponens is an Invalid argument form - CORRECT ANSWER✅✅False
If an argument is a substitution instance of an invalid argument form, then it must be an invalid
argument - CORRECT ANSWER✅✅False
One way to refute a constructive or destructive dilemma is to "grasp the dilemma by the horns,' which
means to prove that the disjunctive premise is false - CORRECT ANSWER✅✅False
If you have the statement ~Z > F on one line and the statement ~Z on another line, then you can use the
Modus Ponens rule - CORRECT ANSWER✅✅True
When you are using a natural deduction proof to show that an argument is valid, the last line of your
proof should always match the first premise - CORRECT ANSWER✅✅False
The conclusion (indicated by a single slash) indicates what the proof should yield in the end; therefore,
you should not cite the conclusion line as justification for any lines within the actual proof - CORRECT
ANSWER✅✅True
In a natural deduction proof, disjunctive syllogism always requires that you cite exactly two line
numbers - CORRECT ANSWER✅✅True
If you derive the statement ~R from the statement ~(ZvF)V~R
and from the statement
~~(ZvF) then you are using disjunctive syllogism (DS) - CORRECT ANSWER✅✅True
If you have a disjunction on its own line and the negation of the right-hand disjunct on another line,
then you may use the disjunctive syllogism rule - CORRECT ANSWER✅✅False
Affirming the consequent is an invalid argument form - CORRECT ANSWER✅✅True
If an argument is a substitution instance of an invalid form, then it could still be a valid argument -
CORRECT ANSWER✅✅True
The double negation rule states that any statement with the form p v q is logically equivalent to q v p -
CORRECT ANSWER✅✅False
Disjunctive syllogism is a valid argument form - CORRECT ANSWER✅✅True
Any argument that is a substitution instance of a valid argument form is valid - CORRECT
ANSWER✅✅True
It is possible for a valid argument to a be a substitution of an invalid argument form in addition to being
a substitution instance of a valid argument form - CORRECT ANSWER✅✅True
Modus Tollens is a valid argument form - CORRECT ANSWER✅✅True
Destructive Dilemma is an invalid argument form - CORRECT ANSWER✅✅False
Affirming the consequent and denying the antecedent are two example of a valid argument form -
CORRECT ANSWER✅✅False
It is impossible for a valid argument to be a substitution in stance of an invalid argument form -
CORRECT ANSWER✅✅False
One way to refute a constructive or destructive dilemma is to "grasp the dilemma by the horns," which
means torueprove one or both of the conditionals in the first premise is false - CORRECT
ANSWER✅✅True
, Sometimes you must perform the operation of double negation or the operation of commutativity on
the statements in an argument to make the argument fit the pattern of a common argument form -
CORRECT ANSWER✅✅True
Modus Ponens is an Invalid argument form - CORRECT ANSWER✅✅False
If an argument is a substitution instance of an invalid argument form, then it must be an invalid
argument - CORRECT ANSWER✅✅False
One way to refute a constructive or destructive dilemma is to "grasp the dilemma by the horns,' which
means to prove that the disjunctive premise is false - CORRECT ANSWER✅✅False
If you have the statement ~Z > F on one line and the statement ~Z on another line, then you can use the
Modus Ponens rule - CORRECT ANSWER✅✅True
When you are using a natural deduction proof to show that an argument is valid, the last line of your
proof should always match the first premise - CORRECT ANSWER✅✅False
The conclusion (indicated by a single slash) indicates what the proof should yield in the end; therefore,
you should not cite the conclusion line as justification for any lines within the actual proof - CORRECT
ANSWER✅✅True
In a natural deduction proof, disjunctive syllogism always requires that you cite exactly two line
numbers - CORRECT ANSWER✅✅True
If you derive the statement ~R from the statement ~(ZvF)V~R
and from the statement
~~(ZvF) then you are using disjunctive syllogism (DS) - CORRECT ANSWER✅✅True
If you have a disjunction on its own line and the negation of the right-hand disjunct on another line,
then you may use the disjunctive syllogism rule - CORRECT ANSWER✅✅False
