make up a set of at least twelve numbers that hav the following landmarks maximum:8 range:6 mode:6 median:5
With a max of 8 and range of 6, the lowest value would be 2. The most frequent value, mode = 6. Since the median = 5, 50% of score ≤ 5 and 50% ≥ 5.
That should give you a start.