The first term of an arithmetic progression is 7 and its common difference is 3.

MATHEMATICS · Multi-part · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

The first term of an arithmetic progression is 7 and its common difference is 3. (i) Find the 8th term and the 20th term of the progression. (ii) Calculate the sum of all terms from the 8th term to the 20th term inclusive.

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