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)
Suman Kumar
https://doubtnut.com/minute-question-answer/calculate-the-number-of-exchange-pairs-of-electrons-present-in-configuration-of-cu-according-to-aufb-14157568
see this similar question
Shifana did you get this