# Ex.3.1 Q3 Data Handling - NCERT Maths Class 7

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## Question

Find the mean of the first $$5$$ whole numbers.

Video Solution
Data Handling
Ex 3.1 | Question 3

## Text Solution

What is known?

First 5 whole numbers

What is unknown?

Mean of first 5 whole numbers.

Reasoning:

Mean of first five whole numbers

\begin{align}=\frac{\text{Sum of all numbers}}{\text{Total numbers}}\end{align}

Steps:

The first five while numbers are $$0, 1, 2, 3, 4$$

$$\therefore$$ Mean of first five whole numbers

\begin{align}=\frac{\text{Sum of all numbers}}{\text{Total numbers}}\end{align}

Arithmetic mean

\begin{align} &= \frac{{0 + 1 + 2 + 3 + 4}}{5}\\ &= \frac{{10}}{5}\\ &= 2\end{align}

Thus, the mean of first five whole numbers is $$5.$$

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