Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Dhairya sharma
because dear in first transotor i hope u understand the current calculation it's just coz of kvl loop low .now then for second transistor current will be addition of ib and ic but ic is less then in ib we know it so we abundant it and go with ib.