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The 30 college students' age (in years) are given below, then find the mode of their ages.
 
2327, 2320, 27, 25, 27, 25, 20, 25, 23, 25, 20, 23, 25, 27, 25, 20, 27, 23, 25, 20, 27, 20, 23, 23, 27, 20, 25, 27
 
Mode = ii
 
[Note: Insert the answer in ascending order.]
1