Arithmetic Series

Math - Grade 10 / Patterns and Algebra

Sample Question

Which formula should you use to find the sum of the sequence given the first and last terms?

  • [% a_n=a_1+\left(n-1\right)d %]
  • [% S_n=\frac{n}{2}\left(a_1+a_n\right) %]
  • [% S_n=\frac{n}{2}\left[2a_1+\left(n-1\right)d\right] %]
  • [% a_n=a+\left(n-1\right)d %]

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Math - Grade 10

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