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

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In the AP (3,10,17,\ldots), what is the sum from the (15)th term to the (32)nd term?

Answer and explanation

Correct answer: (2889)

The required sum is (S_{32}-S_{14}=2889). To find a middle block sum, subtract the previous partial sum.

Related tags

Range Sum Partial Sum Ap 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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