Directions (1 – 5 ) : What should come in place of the question mark (?) in the following number series?
1. 2 14 84 420 1680 5040 ? (3)
(1)8940
(2) 8680
(3) 10080
(4) 5030
(5) None of these
2. 3 5 8 13 21 34 ? (3)
(1) 62
(2) 57
(3) 55
(4) 74
(5) None of these
3. 1 2 6 21 ? 445 2676 (1)
(1) 88
(2) 77
(3) 52
(4) 64
(5) None of these
4. 27 125 ? 729 1331 2197 3375 (4)
(1) 612
(2) 347
(3) 216
(4) 343
(5) None of these
5. 10400 2600 650 ? 40.625 10.15625 2.5390625 (2)
(1) 175.5
(2) 162.5
(3) 154.75
(4) 156.25
(5) None of these