Number Series Questions

In the following question, select the missing number from the given series.672, 666, 660, 654, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series. 12, 60, 240, 720, ?

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

? , 9, 19, 39, 79

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

3, 4, 12, 48, ?

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

1.5, 9/4, 3, ? , 4.5, 21/4

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

76, 38, 19, 9.5, ?

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

30, 60, 360, 3600, ?

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

8,24,12,?,18,54