Answer:
First we put the number in order
(1 3 3 3 4 4 5 7 8 8 9)
The mode is the number that appears the most.
from the above order 3 is repeated more so 3 is the mode
The median is the middle value of a set of numbers.
from (1 3 3 3 4 4 5 7 8 8 9) the middle value is 4 so the median is 4
⇒Then the product of the mode and median
3*4=12