Hello Priya,
Visit the official INSTITUTE OF DISTANCE AND OPEN LEARNING, UNIVERSITY OF MUMBAI site below and fill in your details -
IDOL - http://idoloa.digitaluniversity.ac/
Create and account and register yourself. Provide details as required.
Admission Notification for JULY 2019 - http://mu.ac.in/portal/wp-content/uploads/2014/03/Admission-Notification1.pdf
Hope this helps.
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