Explanation?

112. For a certain set of n numbers, where , is the average (arithmetic mean)
equal to the median?
(1) If the n numbers in the set are listed in increasing order, then the
difference between any pair of successive numbers in the set is 2.
(2) The range of the n numbers in the set is .

112. For a certain set of n numbers, where , is the average (arithmetic mean) equal to the median? (1) If the n numbers in the set are listed in increasing order, then the difference between any pair of successive numbers in the set is 2. (2) The range of the n numbers in the set is .