Find the average of all prime numbers between 1 and 5.  Pick:
A) 30
B) 3.6
C) 5.6
D) 6.6
E) None
Sol.   There are five prime numbers between 1 and 5.   They are 2, 3, 5, 7, 11   âˆ´ Required average = [2 + 3+ 5+ 7+ 11 / 5] = 28/ 5= 
<gadget id="calculator">28/ 5</gadget>
<output>28/5 = around 5.6</output>
5.6   Answer 5.6
<result>C</result>
Find the average of all prime numbers between 1 and 5.