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nth term is 8 - n.

an = 8 - n, so the sequence is {7, 6, 5, 4, 3, 2,...} (this is a decreasing sequence since the successor term is smaller than the nth term).

So, the sum of first six terms of the sequence is 27.

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โˆ™ 2008-12-17 21:57:08
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Q: What is the sum of first six terms of a sequence whose nth term is 8 - n?
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