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)
Ravi bhushan
Dear student, Nothing is 100 percent perfect in this world. It may be some errors in virtual calculator in the google app. Sometimes you will get approximate value of required things. So, please don't worry about it. Practice more and try to get result.