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What is the value of (S_{25}+S_{35}+S_{45})?
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Answer and explanation
Correct answer: (1990)
(S_{25}=325), (S_{35}=630), and (S_{45}=1035), so the total is (1990). Write all three sums separately and add.
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What is the correct answer to this question?
(1990)
Why is this the correct answer?
(S_{25}=325), (S_{35}=630), and (S_{45}=1035), so the total is (1990). Write all three sums separately and add.
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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