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Class 9 Mathematics Sequences and Progressions Sum of first n natural numbersExpert

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If (S_y=15931), what will be the value of (S_{y+3})?

Answer and explanation

Correct answer: (16435)

(S_{178}=15931), so (S_{181}=15931+179+180+181=16471). To move three steps ahead, add the next three terms.

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Math Sequences Natural-Numbers Sum Sum Of First N Natural Numbers Sequences And Progressions Mathematics Class 9 Mcq

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