+2 votes
in Mathematics by kratos

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

1 Answer

+6 votes
by kratos
 
Best answer

(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

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