Step-by-step explanation
We are asked to find the modes of the given data
From the above, we have the following numbers and their frequencies
3 occurs once
4 occurs 2 times
5 occurs 4 times
6 occurs 4 times
Mode simply means the most occurring number in a data set
From the given question, we have that the modes are 5 and 6 because they occur 4 times each
Therefore
The answer is