Answer: All of them do
Explanation: I would check with your instructor on this one.
The mode is the number that appears most frequently in a data set.
In all these sets here, there is a number that appears most frequently.
However, there are two sets that have 2 modes.
These sets are 5, 1, 3, 1, 5 and -2, -2, -2, 2, 2, 2.
