Hi Dilep,

According to the eligibility criteria of IBPS PO 2020 Exam a candidate below 20 years and a candidate above 30 years are not eligible for this exam.

Seeing your birth date, your age is 31 years now, so, clearly you are not eligible for this Exam.

You may refer to this article for more topic-wise books for IBPS PO 2020.

I hope this information helps you.

Good Luck!