The median of a set of 51 elements is the 26th element.
So we have 25 elements after the median.
When we take one of the answer choices and workout the largest element, we need to see if the largest element is at least 25 integers away from 30 so as to get distinct elements.
(A)-10
In this case, the largest element is 50 which is only 20 integers away from 30 - Eliminate
(B) -6
In this case, the largest element is 54 which is only 24 integers away from 30 - Eliminate
(C) -5
In this case, the
...
So we have 25 elements after the median.
When we take one of the answer choices and workout the largest element, we need to see if the largest element is at least 25 integers away from 30 so as to get distinct elements.
(A)-10
In this case, the largest element is 50 which is only 20 integers away from 30 - Eliminate
(B) -6
In this case, the largest element is 54 which is only 24 integers away from 30 - Eliminate
(C) -5
In this case, the
...
