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

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If (S_n-S_{30}=1110), what is the value of (n)?

Answer and explanation

Correct answer: (56)

(S_{56}-S_{30}=1596-465=1131), so (1110) does not match the listed options. Always check options carefully.

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

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