If X is the set of prime single-digit numbers and Y is a set containing each of the numbers in set X raised to the power of 2, how much greater is the median of set Y than the median of set X?	Choose the correct answer:  A) 2  B) 4  C) 9  D) 13  E) 17
set X={2,3,5,7} set of prime single digit numbers   set Y={4,9.25.49} each of the numbers in set X raised to the power of 2   Median set X= (3+5)/2= 
<gadget id="calculator">(3+5)/2</gadget>
<output>4</output>
4   Median set Y= (9+25)/2= 
<gadget id="calculator">(9+25)/2</gadget>
<output>17</output>
17   Required set Y - set X= 13   ANSWER:13
<result>D</result>
If X is the set of prime single-digit numbers and Y is a set containing each of the numbers in set X raised to the power of 2, how much greater is the median of set Y than the median of set X?