SOLUTION: Find the next term in the sequence. -1, 1/2, -1/4 ​

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Question 1149326: Find the next term in the sequence. -1, 1/2, -1/4
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Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Find the next term in the sequence. -1, 1/2, -1/4
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Any "next term" can be justified.
Is it an arithmetic progression, or geometric?
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What do you think is the most obvious?