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2016-06-27T12:58:34+08:00
There are 14 terms in an arithmetic sequence in which 3 is the 1st term and 59 is the last term.
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I mean 15. And those are 59, 55, 51, 47, 43, 39, 35, 31, 27, 23, 19, 15, 11, 7, 3.