y2 formal fallacies

Question 1

denying the antecedent

Answer 1

a fallacy that has the following argument form:
P1: if A then B
P2: not A
C: not B (P1, P2)

the conclusion of an argument with the above form cannot be logically derived from its premises

Question 2

affirming the consequent

Answer 2

a fallacy that has the following argument form:

P1: if A then B
P2: B
C: A (P1, P2)

the conclusion of an argument with the above form cannot be logically derived from its premises