Direction: What value will come in place of the question mark (?) in the following question?

1, ?, 3, 15, 105, 945

Direction: What value will come in place of the question mark (?) in the following question?

14, 15, 31, 94, 377, ?

Direction: What value will come in place of the question mark (?) in the following question?

8, 17, 53, ?, 1079, 6479

Direction: What value will come in place of the question mark (?) in the following question?

38, 43, 215, 220, 1100, ?