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What is the value of (S_{70}+S_{71}-S_{69})?
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Answer and explanation
Correct answer: (2626)
(S_{70}=2485), (S_{71}=2556), and (S_{69}=2415), so the value is (2626). Subtract carefully with nearby indices.
Frequently asked questions
What is the correct answer to this question?
(2626)
Why is this the correct answer?
(S_{70}=2485), (S_{71}=2556), and (S_{69}=2415), so the value is (2626). Subtract carefully with nearby indices.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Sequences and Progressions. Topic: Sum of first n natural numbers.
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