Doubling each number in the set would double the median also. Increasing each number by 10, likewise, would make the median larger by 10. Increasing the smallest number in the set might make the smallest number equal to or greater than the median, upsetting the order and thus changing the median. Decreasing the largest number might have the opposite effect if the new number is smaller than the median. Only choice E maintains the same median because increasing the largest number still makes that number the largest, and therefore would have no effect on the order of the list or the median.