Hello Mageshwari,

In order to crack the sbi po exam 2020, the books that you can refer to score good marks are-

• Quantum CAT by Sarvesh  Kumar Verma
• Data Interpretation by Arun Sharma
• Quantitative  Aptitude for competitive examinations by R.S Aggarwal
• Fast Track objective arithmetic  by Rajesh Verma
• Magical book on Quicker Mathematics by M Tyra

I hope it helps and all the best for the exam.

All the best!