(iv) 192, – 96, 48, – 24, .... (1 mark)
Sol. t1 = 192
t2 = 192 / –2 = – 96
t3 = –96 / – 2 = 48
t4 = 48 / – 2 = – 24
t5 = –24 / – 2 = 12
t6 = 12 / – 2 = – 6
t7 = – 6 / – 2 = 3
t8 = 3/ – 2 = 3/ – 2
∴ The next four terms of the sequence are 12, – 6, 3 and 3/–2
