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Class 10 Mathematics Arithmetic Progressions (AP)Finding the sum of the first $n$ terms of an APExpert

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What is the sum of the integers divisible by (9) between (50) and (200)?

Answer and explanation

Correct answer: (2142)

The terms are (54,63,\ldots,198), making (17) terms. Exam tip: choose the first and last valid terms carefully.

Related tags

Ap Divisible-Numbers Expert Finding The Sum Of The First $N$ Terms Of An Ap Finding The Sum Of The First N Terms Of An Ap Arithmetic Progressions (Ap)Arithmetic Progressions Ap Mathematics

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