In the following question, select the odd number pair from the given alternatives.
5, 11, 21, 43, 85, ?

A series is given with one term missing. Choose the correct option from the given options and complete the series.
5, 6, 9, 15, ?, 40

A series is given with one term missing. Choose the correct option from the given alternatives and complete the series.
3, 2, 6, 8, 18, 40, 72, 240, ?

What will come next in the given series?
6L, 9M, 14O, 21R, ?

What comes next in the given series?
6C, 10F, 14I, 18L, ?

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

In each of the following questions, a series is given, with one term missing. Choose the correct alternative from the given one that will complete the series.
2, 3, 9, 49, ?, 3841

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