The answer would be 11 .. to find the median u line up the numbers in order lowest to highest then mark one off each side till u get the the last remaining number
median is the number in the middle when you organize them in increasing or decreaseing order
they are already in increaseing order so count how many numbers there are 19 numbers the middle would be add 1 and divide by 2 19+1=20 20/2=10 10th number count 10 is median w