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What is the value of (S_{16}+16)?

Answer and explanation

Correct answer: 152

The sum of the first 16 natural numbers is \(S_{16}=\frac{16\times17}{2}=136\). Therefore, \(S_{16}+16=136+16=152\), so option C is correct. The value 136 is only \(S_{16}\); it does not include the additional 16. Exam tip: first use \(S_n=\frac{n(n+1)}{2}\) correctly, then add any extra term separately.

Related tags

MathematicsSequences And ProgressionsNatural NumbersSum Of N TermsArithmetic SeriesSum Of First N Natural NumbersClass 9 Mcq

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