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)
Mayank vedwal Vedwal Best Answer
Yes you have to remember density of earth and radius of earth. With the help of radius you can calculate volume of earth and with the use of density and volume you can calculate mass of earth. Try to remember polar and equatorial radius also , till now no direct question asked in jam from these datas.