Short trick method for solving propositions argument based problem of discrete mathematics-GATE 2021. Ali Seron Jason 10 months ago Short trick method for solving propositions argument based problem of discrete mathematics-GATE 2021. https://www.gyanodhan.com/video/7B4.%20GATE%20CSEIT/Discrete%20Mathematics%201/458.%20Short%20trick%20method%20for%20solving%20propositions%20argument%20based%20problem%20of%20discrete%20mathematics-GATE%202004.mp4