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A catering service places (9) plates on the first table and (4) more plates on each next table. How many plates are placed on (13) tables?

Answer and explanation

Correct answer: (429)

The plate numbers are (9,13,17,\ldots), and (S_{13}=429). Exam tip: treat each table as one term of the AP.

Related tags

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

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