7
The number is 121/2.
The number is 20.
When you add a number to another number the result is their sum
36
Any number can be divided by one and itself, and any other number will result in a fraction.
The number needed is 3 because 120/3 = 40
33
6
6
Calculate the mean, which is the sum of the values divided by the number of values added together.
1