Hello dear,
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Based of your score your percentage will be 30 to 35%  saying exactly is not possible.
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But this will be nearly to 30 to 35% for sure.
Don't worry you are passed.
Passing percentage is 25 to 30% ,, which is 30 marks out of 120.
There's no prescribed Cut off Mark's for SC/ST candidates.
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Cut off marks haven't released yet.I will soon releasing.One who scores more then cut-off marks will be eligible for PGCET.
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hope this helps you out.
Thank you