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)
Srj
answer is 81.pls see attached file
sorry but I didn't understand the solution at all.
ok I will add another file shortly
let me know if you have any doubt in above example
I understood the following but how to get the result i.e. 81?
if you have any further doubt let me know. if you have understood solution kindly consider rating