Directions (Qs.1 to 5): In each of the following questions a number series is given. In each series only one number is wrong that does not follow the given pattern of the series. Find out that wrong number.
Question No : 1
10 27 54 88 132 185 247
(1) 54
(2) 247
(3) 88
(4) 185
(5) 10
Question No : 2
8 18 60 252 1260 7710
(1) 60
(2) 1260
(3) 252
(4) 7710
(5) None of these
Question No : 3
12 7 11 24.5 67 192.5
(1) 192.5
(2) 67
(3) 7
(4) 24.5
(5) None of these
Question No : 4
20 18 39 113 457 2289
(1) 39
(2) 113
(3) 18
(4) 457
(5) None of these
Question No : 5
42 20 17 37 147 1175
(1) 17
(2) 147
(3) 42
(4) 20
(5) 1175