Find the average of all prime numbers between 60 and 90  Choose one
A) 45
B) 55
C) 69
D) 65
E) 77
Prime numbers between 60 and 90 are 67, 71, 73, 79, 83, 89   Required average = (67+ 71+ 73+ 79+ 83+ 89)/6 = 462/6= 
<gadget id="calculator">462/6</gadget>
<output>77</output>
77   Answer is 77
<result>E</result>
Find the average of all prime numbers between 60 and 90