Find the average of all prime numbers between 12 and 24.	Choose the correct choice from the following
A) 30	B) 33.6	C) 18	D) 20	E) None
Sol.   There are five prime numbers between 12 and 24.   They are 13, 17, 19, 23   âˆ´ Required average = [13+ 17+ 19+ 23 / 4] = 72/ 4= 
<gadget id="calculator">72/ 4</gadget>
<output>18</output>
18   Answer 18
<result>C</result>
Find the average of all prime numbers between 12 and 24.