13 The table shows the first 5 terms of sequences A, B and C. 1st term 2nd term 3rd term 4th term 5th term nth term Sequence A 5 12 31 68 129 10 9 8 7 6 Sequence B 3 4 5 6 7 Sequence C 4 8 16 32 64 Complete the table to show the nth term of each sequence. [6] M SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD