PA2-C1A-Villarroel.pdf - Practice Activity #2 PA2 :...

Practice Activity #2 (PA2): Checking Validity of Propositions
Dismath
DIRECTION: Determine the validity of the following propositions by using a truth table
1. (p ∧ q) ∨ (q → p)
p q p^q q → p (p^q)v(q → p)
1 1 1 1 1
1 0 0 1 1
0 1 0 0 0
0 0 0 1 1
The argument is NOT valid .
2. (p → q) → ¬q
p q p → q ¬q (p → q) → ¬q
1 1 0 1 0
1 0 1 0 1
0 1 0 1 0
0 0 1 1 1
The argument is