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In a tile pattern the first figure has (7) tiles and each next figure has (6) more tiles. How many tiles are used in the first (14) figures?

Answer and explanation

Correct answer: (644)

The tile numbers are (7,13,19,\ldots), and (S_{14}=644). Exam tip: find the total of a pattern using the sum formula.

Related tags

ApWord-ProblemTile-PatternWord Problems Based On ApsArithmetic Progressions (Ap)Arithmetic Progressions ApMathematicsClass 10 Mcq

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