List I: 4, 8, 12, 16 List II: x,4, 8, 12, 16
Choose the correct option
A) 5	B) 4	C) 3	D) 10	E) 2
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=(8+12)/2= 
<gadget id="calculator">(8+12)/2</gadget>
<output>10</output>
10   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 10, then x=10.   Answer: 10
<result>D</result>
List I: 4, 8, 12, 16 List II: x,4, 8, 12, 16