Dear Mukul, you haven't mentioned which course in CMI are you enquiring about. CMI offers B.Sc, M.Sc and Ph.D couses. For admission to Ph.D, Candidates need to appear for JEST. For B.Sc the admission is based on an entrance examination which will test the Aptitude for Mathematics as Class 12 level. You can check the syllabus at: https://www.cmi.ac.in//admissions/syllabus.php The dates for 2020-21 will be announced in February 2020.