What should come in place of the question mark (?) in the following number series?
24, 49, ?, 94, 15, 31, 59, 58
(a) 51 (b) 63 (c) 77 (d) 95 (e) of these
(d) It is a combination of two series, namely 24, 49, ?, 94; and 15, 31, 59, 58 The two series correspond to x, (2x + 1), (4x – 1), (4x – 2) Hence the missing term is 4 x 24 – 1 = 95