Dear Aspirant,
For SI Job graduation is must be completed from a recognized university it does not matter either it's an open university. But the university must be recognized by the government.
Without 10+2 no one can not eligible for attending even the entrance test. If you are not completed 10+2 then according to the government who has passed 10th and crossed the age of 17 years then he can directly attend the exam 12th. So better you contact any government colleges which offers exam every year then complete the formalities and attend the exam.
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