The average of first six prime numbers which are between 50 and 90 is Choose the correct answer
A) 35.4  B) 42  C) 45.7  D) 64  E) 67
Explanation :   first six prime numbers which are between 50 and 90 = 53, 59, 61, 67, 71, 73   average = (53 + 59 + 61 + 67 + 71 + 73)/6= 
<gadget id="calculator">(53 + 59 + 61 + 67 + 71 + 73)/6</gadget>
<output>64</output>
64   Answer : 64
<result>D</result>
The average of first six prime numbers which are between 50 and 90 is