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Class 9MathematicsSequences and ProgressionsSum of first n natural numbersEasyLevel 62
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What is the sum of the first (3) natural numbers?

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Answer and explanation

Correct answer: 6

The first three natural numbers are 1, 2, and 3. Therefore, their sum is \(1+2+3=6\). Option 3 is only the third natural number, not the sum. Exam tip: remember that the sum of the first \(n\) natural numbers is \(\frac{n(n+1)}{2}\).

Related tags

Sequences And ProgressionsNatural NumbersSum Of Natural NumbersClass 9 MathematicsArithmetic Series

Frequently asked questions

What is the correct answer to this question?

6

Why is this the correct answer?

The first three natural numbers are 1, 2, and 3. Therefore, their sum is \(1+2+3=6\). Option 3 is only the third natural number, not the sum. Exam tip: remember that the sum of the first \(n\) natural numbers is \(\frac{n(n+1)}{2}\).

Which subject and chapter does this question cover?

This is a Class 9 Mathematics question. Chapter: Sequences and Progressions. Topic: Sum of first n natural numbers.

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