repo it is the rate set up by rbi.at this rate the rbi 
lending money to banks.

in order to maintain the financial stability, some time 
sell the financial instruments with the agrement of 
repurchase the same instruments after certain specefic 
period. the repo rate is the diffrence between the selling 
price and repurchase price.

Repo rate is the rate at which our banks borrow rupees from 
RBI. A reduction in the repo rate will help banks to get 
money at a cheaper rate. ...

repo rate is the rate that rbi take the money from bank on 
his every deposit for safety purpose.
 exp- suppose repo rate is 7% then on every deposit bank 
have to deposit 7% to rbi, that is called repo rate.