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Subjects
Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsMedium
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In a stadium the first row has (13) seats and each next row has (4) more seats. How many seats are there in (18) rows?

Answer and explanation

Correct answer: (846)

The seats are (13,17,21,\ldots) and (S_{18}=846). Exam tip: use the usual sum formula for odd or even rows.

Related tags

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