What is the median of 84 86 87 84 86 89 90 87 87 84 86.?

To find the median, first, arrange the numbers in ascending order: 84, 84, 84, 86, 86, 86, 87, 87, 87, 89, 90. Since there are 11 numbers (an odd count), the median is the middle number, which is the 6th number in this ordered list. Therefore, the median is 86.