In an arithmetic progression

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

Problem

In an arithmetic progression, the sum of the first 8 terms is 5 times its 8th term. If the first term is 14, determine the common difference. (a) 7 (b) 6 (c) 4 (d) 8

Related theory

Arithmetic Progressions
Sequences and Series
Exponential and Logarithmic Functions
Algebra
Sum of first n terms of an AP

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