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1.7 D: Sequences and series

1.7 D: Sequences and series

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Question 31

An arithmetic series is given by

∑r=520(3r+4)\sum_{r=5}^{20} (3r + 4)∑r=520​(3r+4)

a(i).

Write down the first term of the series.

[1]
a(ii).

Write down the common difference.

[1]
a(iii).

Find the number of terms in the series.

[1]
Markscheme

1.7 D: Sequences and series Questions

  1. A Level
  2. /Maths
  3. /1.7 D: Sequences and series

308 exam-style questions on AQA A Level Maths 1.7 D: Sequences and series, covering 1.7.1 Binomial expansion, 1.7.2 Types of sequence (A-level only), 1.7.3 Sigma notation (A-level only), 1.7.4 Arithmetic sequences and series (A-level only), 1.7.5 Geometric sequences and series (A-level only), and 1.7.6 Sequences and series in modelling (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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