Find the average of all prime numbers between 10 and 40 Pick:
A) 15.6  B) 22.5  C) 18.6  D) 32.2  E) 26.9
Prime numbers between 10 and 40 are 11, 13, 17, 19, 23, 29, 31, 37   Required average = (11+ 13+ 17+ 19+ 23+ 29+ 31+ 37)/8 = 180/8= 
<gadget id="calculator">180/8</gadget>
<output>45/2 = around 22.5</output>
22.5   Answer is 22.5
<result>B</result>
Find the average of all prime numbers between 10 and 40