Find the missing term in each of the following:
1, 2, 3, 5, 8, 13, 21, 34, ?
-1, 0, 2, ?, 9, 14, 20, 27
4, 8, 5, 10, 7, 14, 11, ?
3, 4, 2, 5, 1, 6, 0, 7, ?
?, 39, 38, 19, 18, 9, 8, 4, 2, 1, 0
Strictly speaking almost any answer is possible to the above
puzzles since a rule can be made to fit any finite number
of
sequence terms. For example, the next term in the sequence 2, 4,
8, could be a) 16 if one is thinking of powers of 2,
or b) 14 if
one is thinking of the formula n(n-1)+2 for the nth term. It
would be more clear to say: Find the simplest or
most logical
missing term in the above sequences (although even these are
subjective judgements). In giving answers
you should the rule
you inferred for the terms.