Answer: 1, 3, and 5
Explanation:
Modes are the value that is repeated the most (or 2 if there's a tie).
1: 1,1,1
2: 11
3: 1,1,1
4: 1
5: 1,1,1
1, 3, and 5 all have a frequency of 3, so they are all modes.
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