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Subjects
Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsMedium
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The first row of an auditorium has (22) seats and each next row has (4) more seats. How many seats are in the (18)th row?

Answer and explanation

Correct answer: (90)

The seats form an AP and (a_{18}=22+17(4)=90). Exam tip: treat the row number as the term number.

Related tags

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