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

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If (S_n-S_{100}=15150), what is the value of (n)?

Answer and explanation

Correct answer: (200)

(S_{200}-S_{100}=20100-5050=15050), so none of the listed options matches (15150). Always check the difference.

Related tags

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

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