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Exam-Style Question on SequencesA mathematics exam-style question with a worked solution that can be revealed gradually |
Question id: 425. This question is similar to one that appeared on a GCSE Higher paper in 2017. The use of a calculator is allowed.
The first five terms of an arithmetic sequence are:
$$-20, -17, -14, -11, -8$$Find an expression for the \(n^{th}\) term of the sequence.
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Toni B, Australia
Sunday, December 26, 2021
"I'm trying to answer a question in the Arithmetic Sequences for the nth term. Problem is, I've tried three different formats and I still don't have the format right, nor can I guess what it is. When the answer is not a single number, it would be nice to have one example answer for people without subscriptions to see.
[Transum: Toni thanks for your feedback: The question about an arithmetic sequence on this page is an exam-style question. Students are expected to write their answers on paper and many formats for the nth term would be acceptable. Is your question really about this page or is it about one of the Arithmetic Sequence online exercises which appear on other pages with their own comments sections.]"