Another quiz whizz question

[Archangel]

42

reason here?

http://en.wikipedia.org/wiki/42_(number)

[thunderlizard]

1
using A=1, B=2, the sequence spells out the surname of structuralist anthropologist René Girard.

[SantaClaus]

42

[Moose423956]

81

[EternalOptimist]

20:00

[Chantho]

From Absolute radio's "You can't cheat" quiz:

What's the next number in the sequence

7,9,18.

and why?

25

reason here

[Moscow Mule]

If it is an arithmetic series, 58½. ( y = 4.5x - 22.5 )

I doubt Christian O'Connell is using an arithmetic series, but you never know...

[RichardCranium]

What's the next number in the sequence: 7,9,18.

If it is an arithmetic series, 58½. ( y = 4.5x - 22.5 )

[stingman123]

From Absolute radio's "You can't cheat" quiz:

What's the next number in the sequence

7,9,18.

and why?

20?
+2 X2 +2?

[Moscow Mule]

From Absolute radio's "You can't cheat" quiz:

What's the next number in the sequence

7,9,18.

and why?