Answer :

Median means the middle value. First we have to arrange the numbers from least to greatest. 

[tex]= 21, 21, 23, 25, 31, 39[/tex]. 

Median equals to 23.


Put the numbers in order.

21,21,23,25,31,39

Since there are 6 numbers, there is technically 2 middle numbers. When this happens, you go to the number between those 2 numbers. The middle 2 numbers are 23 and 25 therefore the median would be 24. I hope that helps. :)