A Treasury Bill (known as T-Bill) is an instrument of money market, used to finance short term requirements of Government of a country. A T-Bill is issued at a rate lower than the Face value, and redeemed at Face value on maturity, this difference is the rate of interest on T-Bill. This rate of interest is called Risk free Rate of the country.
Among P,Q, R, S, and T,each having a different weight, R is heavier than only P. S is lighter than Q and heavier than T. Who among them is the heaviest?