Given the sequence 3, 8, 13, 18, ... which is an arithmetic sequence a = 3 d = T2 - T1 = 8 - 3 = 5 The general term of an A.P is: Tn = a + (n - 1)d ⇒ Tn = 3 + (n - 1)5 = Tn = 3 + 5n - 5 ∴ Tn = 5n - 2
