The mode of Nevin's four math quiz scores last month is 85 points. On three of the quizzes, he earned the following scores: 90, 86, and 85. What was the score of Nevin's other quiz?
The mode is the most common number in a series of given numbers. If 85 was the mode it would mean that it had to occur the most out of any other number. So it has to be 85.