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What will be the sum of the first (46) natural numbers?

Answer and explanation

Correct answer: 1081

The sum of the first \(n\) natural numbers is \(S_n=\frac{n(n+1)}{2}\). Therefore, \(S_{46}=\frac{46\times47}{2}=23\times47=1081\). Hence, 1081 is correct. An option such as 1071 can result from an arithmetic error in multiplication or addition. Exam tip: for the sum of consecutive natural numbers, directly use \(\frac{n(n+1)}{2}\).

Related tags

MathematicsSequences And ProgressionsNatural NumbersSum FormulaArithmeticSum Of First N Natural NumbersClass 9 Mcq

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