UPSC /RBI – Mental Maths Cheat Codes and Quickly Solving by Manish Kumar AIR 61 - Videos

UPSC /RBI – Mental Maths Cheat Codes and Quickly Solving by Manish Kumar AIR 61 CSE 2017
Manish Kumar as an Investment banker crack UPSC with AIR 61 and RBI AIR 49 in 2017.

source