What's the pattern?

What is the pattern and explain how you got it.

1) 33544355_ _

2) ACZ1254BCZ25_ _

a. 34- i guessed

1) 33544355_ _

3 (+0) 3 (+2) 5 (-1) 4 (+0) 4 (-1) 3 (+2) 5 (+0) 5 (+2) 7 (-1) 6

therefore i'd say: 7 6

Originally posted by crazyblue
1) 33544355_ _

3 (+0) 3 (+2) 5 (-1) 4 (+0) 4 (-1) 3 (+2) 5 (+0) 5 (+2) 7 (-1) 6

therefore i'd say: 7 6

1) 43

each number in the series is the count of the letters it takes to spell the number in the series it represents.

Originally posted by reyotch
1) 43

each number in the series is the count of the letters it takes to spell the number in the series it represents.

4 C
-- obvious guess

PS i cannot spell