Directions (Q. 1-5) : What should come in place of question mark (?) in the following number series?
1. 18, 99, 682, 5443, ? (1)
(1) 48972
(2) 48963
(3) 48975
(4) 48948
(5) 48682
2. 1324, 1721, 2190, 2737, 3368, ? (2)
(1) 3986
(2) 4089
(3) 4136
(4) 4290
(5) 4068
3. 363, 234, 141, 78, 39, 18, ? (4)
(1) 12
(2) 11
(3) 10
(4) 9
(5) 8
4. 665, 463, 307, 191, 109, ? (3)
(1) 79
(2) 69
(3) 55
(4) 51
(5) 47
5. 210, 336, 504, 720, 990, 1320, ? (3)
(1) 1651
(2) 1688
(3) 1716
(4) 1794
(5) 1720