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
105 237 366 473 547 577
(1) 237
(2) 366
(3) 547
(4) 105
(5) 577
Question No : 2
17 26 53 87 161 260
(1) 17
(2) 26
(3) 53
(4) 87
(5) 260
Question No : 3
6 4 5 8.5 18 48 139
(1) 8.5
(2) 4
(3) 5
(4) 18
(5) 48
Question No : 4
100 108 92 124 60 186
(1) 108
(2) 100
(3) 92
(4) 186
(5) 124
Question No : 5
3 12 33 72 135 230
(1) 230
(2) 135
(3) 72
(4) 33
(5) None of these