It’s not at all hard. You will have to go through a screening test (it’s basically like any other competitive examination with simple topics) and personal interview (where the interviewer will ask you basic questions about yourself). Also the interviewer will correct the screening test paper right in front of you while he/she is interviewing you, and if you have written something wrong then he/she will correct you. Nothing to worry about. Focus on mathematics, current affairs (latest within 6 months) and general knowledge. You got this.
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