Question

Write all even numbers between 1 and 21. Find the mean of these numbers.

Answer 1

even no. between 1 and 21
=> 2,4,6,8,10,12,14,16,18,20
mean of these numbers
=>2+4+6+8+10+12+14+16+18+20/10
=> 60/10
=>6

hope it helps uhh!!

Answer 2

Given : The even numbers between 1 and 21

To find : The even numbers and mean of these numbers.

Solution :

We can simply solve this mathematical problem by using the following mathematical process. (our goal is to write the necessary even numbers and to calculate the mean)

Now, the even numbers (i.e. the numbers which are divisible by 2) between 1 and 21 are :

= 2,4,6,8,10,12,14,16,18,20

Now, there are 10 even numbers between 1 and 21

Sum of those 10 even numbers :

= 2+4+6+8+10+12+14+16+18+20

= 110

So, mean of those 10 even numbers :

= Sum of those 10 even numbers ÷ 10

= 110 ÷ 10

= 11

Hence, the even numbers between 1 and 21 are 2,4,6,8,10,12,14,16,18,20. The mean of these numbers is 11