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average of all prime numbers between 30 and 50

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To find out average of the prime numbers between 30 and 50 we need to find out the two things. Those are
1.     No Prime numbers between 30 and 50.
2.     Sum of prime numbers between 30 and 50.

Prime numbers between 30 and 50 : 31,37,41,43,47
since there are 5 prime numbers are there between 30 and 50.

Sum of prime numbers between 30 and 50: 31+37+41+43+47
                                                                             =199

average of the prime numbers between 30 and 50:
                    = sum of elements / no of elements
                   =  199/5
                   =  39.8

Since the average of prime numbers from 30 and 50 is 39.8

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