Let a_n be the nth term of an arithmetic sequence, where the common difference is an integer. It is given that a-1 = 74, a_3 > 60 and a_8 − a_5 < −15.

Find the common difference of the sequence

David claims that there are 14 positive terms in the sequence. Do you agree? Explain your answer.

Collected in the board: Arithmetic sequence

Steven Zheng posted 5 months ago

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