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

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What is the value of (S_{58}+S_{59}-S_{57})?

Answer and explanation

Correct answer: (1887)

(S_{58}=1711), (S_{59}=1770), and (S_{57}=1653), so the value is (1887). Subtract carefully with nearby indices.

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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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