If (S_n=1225), what will be the value of (S_{n+2})?
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Answer and explanation
Correct answer: (1326)
(1225=S_{49}), so (S_{51}=\frac{51\cdot52}{2}=1326). First identify (n) and then find the new sum.
Frequently asked questions
What is the correct answer to this question?
(1326)
Why is this the correct answer?
(1225=S_{49}), so (S_{51}=\frac{51\cdot52}{2}=1326). First identify (n) and then find the new sum.
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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