The first term of an arithmetic progression is 12 and its last term is 60

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

Problem

The first term of an arithmetic progression is 12 and its last term is 60. If the sum of all its terms is 540, determine how many terms the progression contains.

Related theory

Arithmetic Progressions
Sequences and series
Algebra
Sum of first n terms of an AP

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