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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 first (40) terms of the AP (1,6,11,\ldots), find the sum of the terms whose positions are multiples of (4).

Answer and explanation

Correct answer: (1060)

The selected terms are (a_4,a_8,\ldots,a_{40}), and their sum is (1060). In position-based questions, form the new AP of selected terms.

Related tags

Position Multiples Selected Terms 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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