Hello
Amruthavarshini , From some research on Internet I found that the in the pgcet 2020 mba exam there are something around 35,000 approx students who appear in the exam and this exam is annual and there is 120 mins duration of exam.

Hope it will be helpful for you :)

Dear Aspirant ,
As of now there is no Announcement by the official for the number of candidates.

But it is observed that

This year total number of candidates wrote for the entrance test of Post Graduate Common Entrance Test (PGCET) conducted by Karnataka Examination Authority for MBA and MCA is nearly 20000.

Answer key for PGCET has been released link given below :

https://bschool.careers360.com/articles/karnataka-pgcet-mba-answer-key

There is much competition in the exam so stay tuned for the results and counselling process too start

For better understanding use the link given below :

https://www.careers360.com/exams/karnataka-pgcet

Good luck .