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)
yaha pr Kya Kiya y
coz other factors in bottom row is 1 only...we stop calculation when we are left with a number and others are 1 only.