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A notebook has (5) stickers on the first page and (5) more stickers on each next page. How many stickers are there on (20) pages?

Answer and explanation

Correct answer: (1050)

The stickers form the AP (5,10,15,\ldots) and (S_{20}=1050). Exam tip: treat page patterns with a constant difference as APs.

Related tags

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

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