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
539 566 597 636 691 780
(1) 691
(2) 780
(3) 566
(4) 539
(5) 636
Question No : 2
1.375 1.25 2.625 3.875 6.575 10.375 16.875
(1) 6.575
(2) 1.25
(3) 10.375
(4) 2.625
(5) 16.875
Question No : 3
8 59 358 1796 7186 21565
(1) 59
(2) 358
(3) 1796
(4) 7186
(5) 21565
Question No : 4
28 57 173 695 3478 20879
(1) 20879
(2) 28
(3) 3478
(4) 172
(5) 695
Question No : 5
18 22 32 62 142 386
(1) 32
(2) 62
(3) 142
(4) 386
(5) 18