Answer: 38.5
Put numbers in order
26, 26, 32, 35, 38, 39, 40, 45, 46, 72
Note: You must use your left and right pointer finger and start with 26 and 72. Work your way to the middle with your pointer finger. Your left hand will end at 38. Your right will end at 39. Between 38 and 39 will be 38.5.
38, 38.5, 39