Question 1 a) Determine the expected return and risk of equally weighted portfolios when i. The choice is limited to two securities, security A with an expected return of 14 per cent with a standard deviation of 20 per cent and security B with an expected return of 19 per cent and a standard deviation of 26 per cent, and the covariance of returns on these two securities is 180. ii. A portfolio of 50 securities, given an average expected return on the securities of 13 per cent, an average variance of returns of 225, and returns are independent. A portfolio of 50 securities, given an average expected return on the securities of 13 per cent, an average variance of returns of 256, and an average covariance of 102.4