Question

Use a short truth table to determine whether or not the following argument is valid.

~S -> ~(Q v G)

(Q v S) & (G v ~N)

(N v ~S) -> L

So, S & ~N

Question 3 options:

Valid

Invalid when L is true, S is false.

Invalid when N is false, S is false.

Invalid when Q is false, S is true.

Invalid when S is true, G is false.

Answer 1

The truth table for the given statements are:-

here S&~N neds to be true But here it is false

SO Given statementsare invalid When L is true and S is false.