Number Series 2-5

33688, 400, 256, 184, 148, ?
A120
B125
C130
D136


347, 9, 21, 67, 273, ?
A1271
B1375
C1371
D1365


3512, 35, 51, 90, ?, 207
A121
B135
C171
D142


367, 11, 20, 45, 94, 215, ?
A321
B358
C371
D384


37640, 400, 280, ?, 190, 175
A220
B258
C221
D254


3825, 15, 20, 37.5, 85, 225, ?
A650
B658
C620
D690


397, 8, 20, 69, 292, ?
A1452
B1458
C1485
D1490


4016, 64, 224, ?, 1680, 3360
A658
B688
C675
D680