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If (S_{m+3}-S_m=282), what is the value of (m)?
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Answer and explanation
Correct answer: (93)
(S_{m+3}-S_m=(m+1)+(m+2)+(m+3)=3m+6), so (m=92). In a three-step difference, add the next three terms.
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What is the correct answer to this question?
(93)
Why is this the correct answer?
(S_{m+3}-S_m=(m+1)+(m+2)+(m+3)=3m+6), so (m=92). In a three-step difference, add the next three terms.
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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