Question

The mean of first 7 natural numbers is ____________.​

Answer 1

Step-by-step explanation:

=71+2+3+4+5+6+7=728=4.

Mean = 4.

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Answer 2

Question:

The mean of first 7 natural numbers is  

Given:

We are given with first 7 natural numbers

To Find:

The mean of the given numbers

Formulas Used:

The sum of first n natural numbers is  $\frac{n(n+1)}{2}$

$M={\frac{Sum \:of \:the \:numbers }{The \:total\:natural\:numbers}}$

Solution:

The sum of first n natural numbers is  $\frac{n(n+1)}{2}$

The sum of first 7 natural numbers is $\frac{7(7+1)}{2}$

$\frac{7(7+1)}{2}\\\\\\=\frac{7\times8}{2}\\\\\\=\frac{56}{2}\\\\\\=\frac{28}{1}\\\\\\=28$

Sum of the first 7 natural numbers is S = 28

Mean of the first 7 natural numbers is :

$M={\frac{Sum \:of \:the \:numbers }{The \:total\:natural\:numbers}}$

$M = \frac{28}{7}\\\\\\M= \frac{4}{1}\\\\\\M=4$

Mean of the first 7 natural numbers is 4

Answer:

Mean of the first 7 natural numbers is 4

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