Sequences and Series

  • #1
Char. Limit
Gold Member
1,204
14

Homework Statement


So I was helping my roommate with his homework, and it has the following problem:

Fill in the blanks so that

___, 8, ___, ___, 27, ___, ...

is

a. an arithmetic sequence.
b. a geometric sequence.
c. a sequence that is neither arithmetic nor geometric, for which you are able to write a general term.


Homework Equations





The Attempt at a Solution



We tried a Fibonnaci-type sequence, but that really didn't work. And we don't know any other types of sequences. Should I try some sort of quadratic relationship?
 

Answers and Replies

  • #2
Char. Limit
Gold Member
1,204
14
Never mind, solved.
 

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