hi,

see there is various exams like ssc cgl, bank po, state wise public service commission exams which you can apply if you have all the eligibility criteria. one of the things I want to clarify is that, your college education or cracking a government or any of the recruitment exam is totally different. you need to make strategy and follow the routine, have to study for 7+ hours daily  according to the syllabus, so there can not be any prediction like how many attempt it would take, you can crack any exam only at first attempt if you have studied it methodically,

hope you understand.