List I: 3, 6, 8, 11
List II: x, 3, 6, 8, 11 Choose the correct option:
A) 5  B) 6  C) 7  D) 8  E) 9
List I has even number of terms, thus its median is the average of two middle terms (when arranged in ascending/descending order), so median=(6+8)/2= 
<gadget id="calculator">(6+8)/2</gadget>
<output>7</output>
7.   List II has odd number of terms, thus its median is the middle term (when arranged in ascending/descending order). As no other number in the list equal to 7, then x=7.   Answer: 7.
<result>C</result>
List I: 3, 6, 8, 11
List II: x, 3, 6, 8, 11