Can anyone please determine me the following argument is valid or not in SHORT TRUTH TABLE method (indirect truth table method) of critical thinking?
1. (A v B) -> ( C & D )
2. ( X v Y ) -> ( ~C & ~W)
3. ( X v Z ) -> ( A & E )
Therefore, ~X
If the argument is invalid, please also indicate truth values of the simple propositions that demonstrate the invalidity.
VERY URGENT!!!! 15 POINTS!!! THANKS