1.(a) 
    (i) 3
    (ii) 8
  (b) 
    (i) 1
    (ii) 2
2.(a)
    (i) 23
    (ii)100
  (b)  
    (i)77
    (ii)100
3.(a) iii
  (b) i
  (c) 
    (i) 41
    (ii) 100
4.(a) 
    (i) 1
    (ii) 6
  (b) 
    (i) 2
    (ii) 3
5.(a) 
    (i) 1
    (ii) 2
  (b) 
    (i) 1
    (ii) 5
6.(a) i
  (b) ii
7) 
(a) ii
(b) i