Quantitative Aptitude For All Bank Exam

In each of these questions a number series is given.In each series only one number is wrong.Find out the wrong number.
1.17      20       46       147     599       3015   18108
[1]20           [2]46         [3]599       [4]147          [5]3015

2.9         14      40         129        536        2705      16260
[1]14         [2]40         [3]536          [4]9          [5]129

3.8      18      64        272         1395        8424        59045
[1]18      [2]64         [3]272        [4]1395        [5]8424

4.90  135     286        750       2160          6405         19155

[1]90         [2]750        [3]6405          [4]286       [5]2160

5.17        36      132         635    3500   21750     153762
[1]635         [2]635         [3]132     [4]3500      [5]36

Answr
1.[3]The number should be 600 in place of  599. The series is*1+3, *2+6, *3+9,....

2.[2]The number should be 38 in place of  40. The series is *1+5, *2+10, *3+15....

3.[2]The number should be 63 in place of  64. The series is (8+1)*2, (18+3)*3, (63+5)*4.....

4.[4]The number should be 285 in place of  286. The series is (90 - 45)*3, (135 - 40)*3, (285 - 35)*3.....

5.[1]The number should be 636 in place of  635. The series is (17+13)*2, (36+23)*3, (132+33)*4.,(636+43)*5.....