Exemption criteria in ipcc exam

Hello, Could any one please expalin me the exemption criteria in IPCC exams.

What i knew :- Scoring 60 or above in any paper exempts from writing the same, and is valid for next three attempts.

What i heard :-  Even after scoring 60 or above in any paper, you must score 30 or above in other subjects to avail such exemption.

Kindly clarify.

Thanks & Regards

Sonu Kakde