For part iii), I saw it as:
Total points awarded to all teams = 4
therefore, Home must score >2.
Possibilities:
1 Win, 3 Draws = 0.2 * (0.6)^3
2 Wins, 1 Draw = (0.2)^2 * (0.6)^2
3 Wins [Includes 4 wins] = (0.2)^3
Total Possibilities = 0.0656
Not sure if this is right though...