Number Series Questions

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

5, 30, 155, 780, ?

In the following question, select the missing number from the given series.
1, 3, 6, 10, 15, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
10, 29, 66, 127, ?

What will come in place of the question marks (?) in the following Number series?8, 14, 26, 44, 68 (?)

What should come in place of the question mark (?) in the following number series? 1, 3, 24, 360,8640, 302400, ?

In the following question, select the missing number from the given series.146, 137, 128, ?, 110, 101

In the following question, select the missing number from the given series.
1357, 3085, 5282, 8026, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

17, 27, 42, 62,?