What is a field meter used to

456, 460, 444, 508, 252, ?

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

5, 14, 41, 122, 365, 1094, ?

Find the missing number in the given number series.

2, 5, 11, 23, 47, ?

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

18, 25, 36, 49, 66, ?

168, 164, 155, 139, ?, 78

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

17, 21, 30, 46, ?, 107

24 36 72 108 216 ?

51, 60, 78, ?, 141, 186

25, 30, 50, 60, 80, ? 

Find the next term in the series:

4, 9, 19, 39, 79, ?