Question

Find the mean of all the even numbers between 11 and 21

Answer 1

Here is your answer buddy,

The even numbers between 11 and 21 are = 12,14,16,18,20

Now, we know that,

Mean = $\frac{1+2+3+........n}{n}$

So,

The mean = $\frac{12+14+16+18+20}{5}$

= $\frac{80}{5}$

= 40

Hope this helps you.
Be Brainly.

Answer 2

Explanation:

As we know that -

Mean= 1+2+3+.............+n/n

The even number is 12,14,16,18,and 20

The all possible number= 5

So, we have

Mean= 12+14+16+18+20/5

Mean= 80/5

Mean= 16.