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
8000 6000 4500 3875 2531.25 1898.4375 1423.8281
(1) 4500
(2) 3875
(3) 6000
(4) 1423.8281
(5) 1898.4375
Question No : 2
759 724 651 600 551 504
(1) 724
(2) 504
(3) 551
(4) 600
(5) 651
Question No : 3
11 16 42 131 584 2945
(1) 11
(2) 131
(3) 2945
(4) 16
(5) 42
Question No : 4
172 200 263 388 604 947 1459
(1) 263
(2) 388
(3) 200
(4) 604
(5) 947
Question No : 5
6 30 150 450 1350 1575
(1) 150
(2) 1350
(3) 6
(4) 30
(5) 1575