What is the value of (S_{35}+S_{55}+S_{75})?
Answer and explanation
Correct answer: (5020)
(S_{35}=630), (S_{55}=1540), and (S_{75}=2850), so the total is (5020). Write all three sums separately and add.
Frequently asked questions
What is the correct answer to this question?
(5020)
Why is this the correct answer?
(S_{35}=630), (S_{55}=1540), and (S_{75}=2850), so the total is (5020). 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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