Find four numbers which have a mode of 12, a median of 14 and a range of 10

12,12,16,22

The median is the middle number. If there are two middle numbers you find the average

12 + 16 = 28 / 2 = 14 so the median is 14

Mode is the most common number so the number that appears the most so 12 is the mode.

The range is the smallest number in the set subtracted by the biggest so 22 - 12 = 10 so the range is 10.

Note you have to keep everything in order from least to greatest then do the math so 16,12,22,12 will still have the same mode and range and median.