Portfolio of one stock at onceportfolios of two stocks at

Question

the profits of 4 stocks, A, B, C, and D over a time of 5 years have been as per the following: 

1     2     3     4         5 

A     8%     10%     -6%     -1%     9 % 

B      10%      6%     -9%     4 %     11% 

C      9%      6%     3%      5%      8% 

D      10%      8%     13%      7%      12% 

Compute the arrival on: 

a.    portfolio of one stock at once 

b.    portfolios of two stocks at once 

c.    portfolios of three stocks at once. 

d.    a arrangement of all the four stocks. 

Expect equiproportional venture.