Find the average of all prime numbers between 40 and 80.	Select
A) 59.4  B) 56  C) 39.8  D) 44.9  E) None
Sol.   There are five prime numbers between 40 and 80.   They are 41, 43, 47, 53, 59, 61, 67, 71, 73, 79   âˆ´ Required average = [41+ 43+ 47+ 53+ 59+ 61+67+ 71+73+ 79 / 10] = 594/ 10= 
<gadget id="calculator">594/ 10</gadget>
<output>297/5 = around 59.4</output>
59.4   59.4nswer 59.4
<result>A</result>
Find the average of all prime numbers between 40 and 80.