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What is the sum of the first (1) natural number?

Answer and explanation

Correct answer: 1

The first natural number is 1. Therefore, the sum of the first 1 natural number is simply 1. Using \(\frac{n(n+1)}{2}\) with \(n=1\), we get \(\frac{1\times2}{2}=1\). Option A is not correct because 0 is not included here as the first natural number. Exam tip: “First \(n\)” means the sum of numbers from 1 to \(n\).

Related tags

Sequences And ProgressionsNatural NumbersSum Of Natural NumbersArithmetic SeriesGrade 9 MathematicsSum Of First N Natural NumbersMathematicsClass 9 Mcq

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