For an arithmetic progression with positive integer terms

MATHEMATICS · Subjective · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

For an arithmetic progression with positive integer terms, the sum of the first 10 terms is 145 and the sum of the first 20 terms is less than 400. Assuming the common difference is a positive integer, find its value.

Related theory

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

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