2000 का Note ban हो गया .. लेकिन क्यूं?? अब क्या करना है ?? Note ban 2000 by RBI

Highly anticipated Rs. 2000 note ban has been implemented by RBI.. Understand why the same has been done and also why Rs. 2000 note was initially introduced.

Also, what is to be done now and what precautions to be taken while getting the things sorted.