1.
4, 18, ?, 100, 180, 294, 448
2.
3, 5, 5, 19, 7, 41, 9, ?
6.
7, 8, 18, 57, ?, 1165, 6996
8.
2, 10, 37, 101, 226, ?
12.
5, 8, 16, 19, 57, 60, .....
14.
330, 329, 321, 294, ?
15.
101, 98, 93, 86, 75, ?
16.
6, 7, 9, 12, 16, 21, ?
17.
9, 19, 21, 43, 45, ...
18.
78, 77, 73, 64, 48, ?
