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
12 15 27 42 69 110 180
(1) 180
(2) 69
(3) 15
(4) 27
(5) 110
Question No : 2
18 20 43 133 537 2690
(1) 20
(2) 2690
(3) 43
(4) 537
(5) 133
Question No : 3
6 8.5 16.5 66.0 269.5 1354.0
(1) 16.5
(2) 8.5
(3) 66.0
(4) 1354.0
(5) 269.5
Question No : 4
42 41 78 225 878 4395
(1) 878
(2) 4395
(3) 41
(4) 225
(5) 78
Question No : 5
20 22 47 145 585 2920
(1) 2920
(2) 145
(3) 585
(4) 47
(5) None of these