In a stepped garden

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

Problem

In a stepped garden, the number of tiles in each successive step forms an arithmetic progression. If the 3rd step has 18 tiles and the 8th step has 33 tiles, how many tiles are in the first step? (a) 15 (b) 9 (c) 12 (d) 18

Related theory

Arithmetic Progressions
Functions
Sequences and Series
Exponential and Logarithmic Functions
Algebra
nth term of an AP

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