Directions (1-5): What should come in place of the question mark (?) in the following number series?
1. 980 484 236 112 50 ? 3.5 (5)
- (1) 25
- (2) 17
- (3) 21
- (4) 29
- (5) None of these
2. 8 9 20 63 256 1285 ? (3)
- (1) 6430
- (2) 7450
- (3) 7716
- (4) 7746
- (5) None of these
3. 1015 508 255 129 66.5 ? 20.875 (4)
- (1) 34.50
- (2) 35
- (3) 35.30
- (4) 35.75
- (5) None of these
4. 12 12 18 36 90 270 ? (1)
- (1) 945
- (2) 810
- (3) 1080
- (4) 1215
- (5) None of these
5. 4, 16, 52, 160, ? (5)
- (1) 472
- (2) 474
- (3) 482
- (4) 468
- (5) 484