Directions (Q. 1-5) : What should come in place of question mark (?) in the following number series questions?
1. 2 1 1 1.5 3 ? (1)
(1) 7.5
(2) 6
(3) 5
(4) 4.5
(5) 2.5
2. 51 66 83 102 123 ? (2)
(1) 127
(2) 146
(3) 171
(4) 85
(5) None of these
3. 4 24 84 264 804 ? (4)
(1) 2622
(2) 2464
(3) 2414
(4) 2424
(5) 2484
4. 24 36.2 30.4 33.6 32 ? (1)
(1) 32.8
(2) 36.2
(3) 34.6
(4) 38.8
(5) None of these
5. 6 9 13.5 20.25 30.375 ? (4)
(1) 45.7585
(2) 46.7520
(3) 28.7345
(4) 45.5625
(5) 49.7525
