www . seprodstore . com 329 Answers 30.4 ( a ) ( i ) 2 1 8 0 1 � � � � � � � A ( ii ) 3 1 12 0 1 � � � � � � � A ( iii ) 30 1 120 0 1 � � � � � � � A ( b ) ( i ) 2 1 21 0 4 � � � � � � � B ( ii ) 3 1 49 0 8 � � � � � � � B ( iii ) 1 7516192761 0 1073741824 � � � � � � ( c ) Refer to solution Chapter 8 31.1 14 k �� or 3 k � 31.2 0 k � and 1 4 k � 31.3 ( a ) 1 s �� ( b ) ( 3 , 2,1 ) 31.4 ( a ) 2 s �� ( b ) 11 k � 32.1 ( a ) 1 2 3 7 5 4 t � � � � � � � � � � � � � � � � � � � � � � � r ( b ) ( i ) 2 AB 5 5 � � � � � � � � � � � � � � ( ii ) 0 2 3 5 0 5 s � � � � � � � � � � � � � � � � � � � � � � � � r 32.2 ( a ) ( i ) 3 AB 12 2 � � � � � � � � � � � � � � � ( ii ) 1 3 4 12 7 2 t � � � � � � � � � � � � � � � � � � � � � � � � � r ( b ) 100 3 k �� 32.3 ( a ) 10 5 15 � � � � � � � � � � � � � v ( b ) 3 10 2 5 1 15 s � � � � � � � � � � � � � � � � � � � � � � � � � � r 32.4 ( a ) ( i ) 1 AB 3 2 � � � � � � � � � � � � ( ii ) 2 AC 2 3 � � � � � � � � � � � � � � ( b ) 5 AB AC 7 8 � � � � � � � � � � � � � � � � ( c ) 4 5 2 7 2 8 t � � � � � � � � � � � � � � � � � � � � � � � � � � r 33.1 ( a ) 5 3 12 0 � � � � � � � � � � � � a b ( b ) 36 13 Exercise 31 Exercise 32 Exercise 33