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If \(S_n\) is the sum of the first \(n\) natural numbers, which recurrence relation for \(S_{n+1}\) is correct?

Answer and explanation

Correct answer: \(S_{n+1}=S_n+(n+1)\)

\(S_n\) contains the numbers from 1 to \(n\). To obtain \(S_{n+1}\), only the next natural number, \(n+1\), is added; hence A is correct. Exam tip: list the added term to verify a recurrence.

Related tags

Natural NumbersSum Of N TermsSequencesProgressionsRecurrence RelationSum Of First N Natural NumbersSequences And ProgressionsMathematics

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