There is not one single definition for a mixed economy, but
relevant aspects include: a degree of private economic
freedom (including privately owned industry) intermingled
with centralized economic planning (which may include
intervention for environmentalism and social welfare, or
state ownership of some of the means of production).this is
found in US Cuba.

all currency notes are to be issued by rbi except re 1 which
is to be issued by ministry of finance

clearing house is the house where the transction of cheques 
of different nationalize banks is transfer to the belonging 
banks