SOLUTION: find the 20th term of the arithmetic sequence 17,13,19

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Question 403601: find the 20th term of the arithmetic sequence 17,13,19
Answer by Edwin McCravy(20056) About Me  (Show Source):
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17,13,19 is not an arithmetic sequence because 13-17 = -4 and 19-13 = 6,
those are not the same number, so it is not an arithmetic sequence.
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