Arranging the marks in ascending order
5, 9, 10, 12, 15, 16, 19, 20, 20, 20,20, 23, 24, 25, 25
It is clear that 20 occurs more times
∴ Mode = 20
Here N = 15 which is odd
∴ Median = (n+1)/2 term
= (15+1)/2= 8th term = 20
Yes, mode and median are same,