What should come in place of the question mark (?) in the following number series
12 12 18 36 90 270 ?
12(×1)12(×1.5)18(×2)36(×2.5)90(×3)270(×3.5)945
1015 508 255 129 66.5 ? 20.875
8 9 20 63 256 1285 ?
980 484 236 112 50 ? 3.5
Directions (next six questions) : What should come in place of the question mark(?) in the following questions
(15.5% of 1245) - (12.5% of 1458) = ?
?%of 658+40%of 845 = 568.3
