Shorter Truth Table Technique

This technique helps you to quickly decide whether an argument is valid or invalid or say a proposition is a tautology, contradiction or contingent.

[simranraina]

Respected sir, ur way of teaching is fabulous. I can't stop listening.

[suhanisingh]

When proving validity (if the argument is obviously not invalid) so do we also have to find it out whether the argument is contradiction, tautology or contingent ?

[BabitaKumari-qdqh]

Sir please upload other vdo on
19rules and again on short method of truth table.

[priyanshugupta]

Aaj mera exam hai aur aapki wajah se accha jayega😂 thank you very much sir

[suhanisingh]

If I may ask a simple question, where do we use reductio ad absurdum method?