$1.$ Calculate the NPV of $5$ year project of R$1540000$ with $14\%$ return on investment using replacement chain technique?

$2.$ The covarience between two assets, X and Y is $0,003.$ Standard deviation for asset X is $5\%,$ and for asset Y it is $7\%.$ The market standard deviation is $6\%.$ Calculate the coeffecient of correlation of the two assets?

$3.$ Two projects over $5$ year period, with NPV of R$2,300,000$ and R$2,650,000$ requiring $13\%$ return on investment. Calculate the equivalent incomes of these project using equivalent annual income technique?