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# C1 Edexcel Maths Help watch

1. Hello,
An arithmetic series has a common difference of 7.
Given that the sum of the first 20 terms of the series is 530, find
(i) the first term of the series,
(ii) the smallest positive term of the series.

I've found that the first term is -40 but I'm unsure on how to answer ii
Thanks
2. (Original post by Grewsters)
Hello,
An arithmetic series has a common difference of 7.
Given that the sum of the first 20 terms of the series is 530, find
(i) the first term of the series,
(ii) the smallest positive term of the series.

I've found that the first term is -40 but I'm unsure on how to answer ii
Thanks
Think about first term and the common difference, and what kind of area the smallest positive term of the series would be in.
3. oh wow yeah that's a lot simpler than I was was thinking
Thanks

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