The 3rd term of an arithmetic progression is 7 and the 8th term is 22.

MATHEMATICS · Multi-part · A Level · Mathematics · Sequences and series · Sequences and series

Problem

The 3rd term of an arithmetic progression is 7 and the 8th term is 22. (i) Find the first term and the common difference. (ii) Hence, determine the 20th term.

Related theory

Arithmetic Progressions
Functions
Algebra
Sequences and Series
nth term of an AP

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