Question

# Find the mean of the first five numbers which belong to the set of natural numbers.

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Hint:- Let us first find sum of numbers and then divide that by 5 because Mean = $\dfrac{{{\text{Sum of all Observations}}}}{{{\text{Total number of observations}}}}$.

So, now as we know that the mean of n numbers is given as $\dfrac{{{\text{Sum of n Numbers}}}}{{\text{n}}}$.
Mean = $\dfrac{{{\text{Sum of first five natural numbers}}}}{5}$ = $\dfrac{{{\text{15}}}}{{\text{5}}}$ = 3