How do u find the mode of three numbers?

im helping my brother with his homework, and i forget how to get the mode of numbers.How do u find the mode of three numbers?
its the number you see most,





example:


31,34,65,31,78,31,19


31 is the mode because it shows up the most.How do u find the mode of three numbers?
The mode of a set of data is the value in the set that occurs most often.
It's the most frequent, not the average. 2/3 answers should be the same, otherwise there is no mode!