1
(a)
(b)
(c)
(d)
(e) 1
2
3
4
750
5
(c) 0
6
(a) {(T, T), (T, H), (H, H), (H, T)}
(b) (i)
(ii)
7
(a) 20
(b) 30
(c) 30
8
9
(c) 5