The ages of people riding a train are shown below. 12, 17, 16, 10, 20, 13, 14, 14, 12, 12, 19, 18 What is the mode of the ages? A. 13 B. 12 C. 16 D. 14

Mode is the number that comes most often, so first you need to put the numbers in order. (20, 19, 18, 17, 16, 14, 14, 13, 12, 12, 12)

The number 12 comes the most, so the answer is B. 12

12 because 12 occurs most often in the sequence