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Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsHard
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An auditorium has (30) seats in the first row and (6) more seats in each next row. How many seats are there in (18) rows?

Answer and explanation

Correct answer: (1458)

The seats form the AP (30,36,42,\ldots), and (S_{18}=1458). Exam tip: convert row arrangements into APs.

Related tags

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