Answer :
To find the average we have to add all numbers together and divide that sum by number of numbers which we added.
Lets do this
10+18+23=51
Lets divide it by number of numbers addes, so by 3
51:3=17 - its average of 10, 18 and 23
Lets do this
10+18+23=51
Lets divide it by number of numbers addes, so by 3
51:3=17 - its average of 10, 18 and 23
