1.(a) i
  (b) ii
  (c) iii
2. a
 3(a) (i)1
      (ii)2
(b) 0.1686 Answer is correct for any number between 0.1685 to 0.1687
(c) Yes
4. (i)1
   (ii)2
5. (i)1
   (ii)2
6 a
7.(a) 12
  (b) (i) 2853
      (ii)3125
8.(a) 13
 (b) 1 
 (c) 5 
9.(i) 0.2877 Answer is correct for any number between 0.2876 to 0.2878
  (ii) 0.6931  Answer is correct for any number between 0.6930 to 0.6932
  (iii) 1.3863  Answer is correct for any number between 1.3862 to 1.3864