Which number among the following does not belong to the series 8, 27, 50, 125, 343?

Find the next term in the series.

1329, 997, 725, 507, 337, ?

What will come in place of question mark (?) in the following series?
8, 10, 18, 44, 124, ?

Direction (66-70): What should come in place of the question mark(?) in the following number series?

12664   34    20  14 ?

What will come in place of question mark ( ? ) in the following series?
13, 25, 61, 121, 205, ? 

What will come in place of the question mark (?) in each of the following series?

15     18    16   19     17    20    ?

Direction : What should come in place of the question (?) in the following question.

15  34    20   ?   25    43  30