MULTIPILCATIONS IN 2 SECONDS(TUTORIAL-1)BY-SHUBHAM KUMAR

this video deals with the overall idea of how WE Can solve hard multiplication problems in 2 second.The following set of problems are discussed: 1.multiplication by 5,25,125,625,..... 2.multiplication by 11 3.multiplication by 12 4.multiplication by 13,14,15 5.multiplication by 99,999,9999,... 6.multiplication of 2 digit numbers