The sum of the first terms of a sequence is

MATHEMATICS · Single correct · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

The sum of the first nn terms of a sequence is Sn=7n+9S_n = 7n + 9. Which statement about this sequence is correct? (a) It is an arithmetic progression with first term 7 and common difference 0. (b) It is not an arithmetic progression. (c) It is an arithmetic progression with first term 16 and common difference 7. (d) It is an arithmetic progression with first term 16 and common difference −9-9.

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