if the 26 english alphabets are taken such that A=1 B=2 C=3 .......Z=26 then find the mean and median of the numbers corresponding to the vowels

A=1, E = 5, I = 9, O = 15 ans U = 21

1,5,9,15,21

median = 'middle' number = 9

mean  = (1+5+9+15+21) / 5  =  10.2