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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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The (9)th term of an AP is (49), and the (24)th term is (124). Find the sum of the first (35) terms.

Answer and explanation

Correct answer: (3290)

From the two terms, (d=5) and (a=9), so (S_{35}=3290). First find (a,d), then apply the sum formula.

Related tags

Given Terms Find 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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