SOLUTION: how are you supposed to find the first three terms of an arithmetic sequence if you don't know the common difference?

Question 1049463: how are you supposed to find the first three terms of an arithmetic sequence if you don't know the common difference?
Answer by Edwin McCravy(20054) (Show Source): You can put this solution on YOUR website!

It's possible if you are given something else, like some terms,
and/or the number of terms.  Then you can find the common
difference.  The common difference doesn't have to be given,
as long as enough other information is given so you can
calculate it with the formulas.  What is the problem you are
having trouble with?

Edwin

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