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in an arithmetic sequence, the sum of the first four terms is 20, while that of the first seven is 47, What is the sixt term of the sequence​

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Answer:

The general term of a geometric sequence is given by the formula: an=a⋅rn−1. where a is the initial term and r the common ratio. So another way of finding the 6 th term is to use the formula: an=1⋅(−2)6−1=(−2)5=−25=−32.

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