If there are 2 left, then their arithmetic mean (average) is the median.
Your number is nice.
Median is the middle number.
The median of a data set is the number that is literally in the middle. For example: The median of the number set 1,1,3,4,7, is 3 because it is in the physical middle of the set of numbers. Note: To find a median, the numbers MUST be in written in order the median of 2,6,3, is not 6. You must rearrange them like: 2,3,6 and we can see 3 is the median
ask her
No. One number cannot have a median.
Impossible to answer without knowing make or serial number.
The median of a single number, such as 21618, is the number itself.
There is not a median for 1 number.
The mass number doesn't depends on the number of electrons.
That would depend on the value of the other numbers. It might have no affect on any of them or it could affect all of them. It is impossible to say without knowing what the other numbers in the set are.
Any number can be a median, so for the correct set of values, 40 could be a median.
Impossible to answer without knowing who made it.