as we observed in this chapter,central banks, rather than purposefully setting the level of the money supply usually set a target level for a short term interest rate by standing ready to lead or borrow whenerver money people need more money for a reason other than a change in the interest rate,the money supply therefore expands,and it contracts when they wish to hold less. a. describe the problems that might arise if a central bank sets monetary policy by holding the market interest rate constant. ( first, consider the flexible price case, and ask yourself if you can find a unique equilibrium price level when the central bank sample gives people all the money they wish to hold at the pegged interest rate. then consider the sticky price case.)

In 10 lines explain the difference between the money, interest rates and exchange rates?