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A student added all numbers from (1) to (37). What will be the result?

Answer and explanation

Correct answer: 703

The sum of the first \(n\) natural numbers is \(\frac{n(n+1)}{2}\). Here, \(n=37\), so the sum is \(\frac{37\times38}{2}=37\times19=703\). A value such as 693 can result from an arithmetic error while multiplying or dividing. Exam tip: for consecutive numbers from 1 to \(n\), apply \(\frac{n(n+1)}{2}\) directly.

Related tags

Sum Of Natural NumbersArithmetic ProgressionSeriesGrade 9 MathematicsSum Of First N Natural NumbersSequences And ProgressionsMathematicsClass 9 Mcq

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