P, Q and R can complete a piece of work in 9, 12 and 18

Find the missing number in the given number series.

2, 5, 11, 23, 47, ?

418, 406, 430, 382, 478, ?, 670

1 12 31 58 93 ?

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

92, 153, 220, ?, 364, 443

13 19 32 52 ? 113

250     25      5      ?      0.6       0.3

10, 15, 25, 35, ?, 65

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

2, 5, 14, 41, 122, 365, ?

4      11        22       ?        56      79      106

48, 24.5, ?, 39.75, 81.5, 206.25, 621.75