2807, 1400, 697, 346, 171, 84, 41, ?
107    157    194    ?     237    247
...-1, 5, 23, 59, ?
3    8    26    93    ?   1985   11940
...418, 406, 430, 382, 478, ?, 670
452, 369, ?, 217, 146, 79
17 21 51 169 701 ?
4, 7, 12, 21, 36, ?
What value should come in place of (?) question mark in the following number series.
2, 6, 12, 20, 30, ?
Find the missing number in the given number series.
8, 9, 16, 11, 32, 13, ?