Do Veeky Forums even logic?

For each sequence:
i does not belong
ii does not belong
iii does not belong
My reasoning for this is that they do not share the same numeral system as the other numbers.

...

I think ii might be 8 because 19+9/2=14 and 19+14/3=11

4 because it appears twice
11 because it is prime
2 because it is the oddest prime

i
ii
iii

duh.

i is 4 (ill go with the appears twice logic)
ii is 19 ( 8, 9, 11, 14 is a sexy sequence- 1 2 3)
iii is 17 (2,7,9,16 is a sequence where the term is the sum of the last 2)

For i: 8 deceased by +1 each time. 4-0 then 4-1 then 3-2

1,2,3,?
find the next element in the sequence
SPOILER: it's [spoiler]4296829342985[/spoiler]

-
11
7

i) 0
ii) 7
iii) 8