Determine if a Conclusion is Valid or Invalid using a Truth Table-2 Statements

In this video, I show how to determine if a conclusion is valid or invalid using a truth table. In order to be valid the argument must end in a tautology, which means that all truth values are true in the last column of the truth table.

[@bereketg5609]

Tnx i was struggling for a moment it helps me a lot

[@ankur4140]

Helped me, thanks, keep up the good work.

[@tamannat981]

In the last coloumn ,the third row will be false right??