Select the correct option will complete the given number series.

 

13, 10, 7, 4, ___

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

(3, 5), (5, 7) ( ? ), (11, 13)

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

206, 309, 412, ?, 618, 721

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
2, 10, 30, 68, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
1, 5, 30, 210, 1680, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
1, 7, 42, 210, 840, ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
2, 7, 16, ? , 46, 67

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
49, 64, ?, 100, 121

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
XIIIII, IXIIII, IIXIII, IIIXII,IIIIXI, ?