(v) 22, 26, 28, 31, ... (1 mark)
Sol. t1 = 22, t2 = 26, t3 = 28, t4 = 31
t2 – t1 = 26 – 22 = 4
t3 – t2 = 28 – 26 = 2
t4 – t3 = 21 – 28 = 3
Here, The difference between any two consecutive terms is not constant.
∴ The sequence is not an A.P.
