Find terms of an arithmetic sequence
Each term is the one before plus the common difference.
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Find the common difference of the sequence 13, 11, 9, 7, …
Answer: -2
Find the common difference of the sequence 13, 9, 5, 1, …
Answer: -4
Find the common difference of the sequence −1, −9, −17, −25, …
Answer: -8
Tip: Each term is the one before plus the common difference.
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