In each of the following questions, a sequence is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
2, 3, 5, 9, 17, ?

6, 42, ?,  1260, 5040, 15120, 30240

What number comes next in the series?
1, 2, 3, 5, 8, ___

Find the next number in the series.
4, 9, 20, 43, ?

Find the missing (?) in the series 13, 14, 18, 27, ?, 68, 104,?

Identify the correct option to complete the following series.
1, 3, 5, 11, 21, 43, 85, 171,___

Which of the following numbers will replace the question mark in the given series?
3, 7, 22, 89 , ? 

Which group of letters will complete the given letter series by sequentially placing the blank space?
M_OMMN_M_NOMMN_M