If the discount/required rate is 10 per cent, compute the present value of the cashflow streams detailed below. (a) Rs 100 at the end of year 1; (b) Rs 100 at the end of year 4; (c) Rs 100 at the end of (1) year 3 and (ii) year 5 and (d) Rs 100 for the next 10 years (for years 1 through 10)