Question

Find the mean of the prime numbers between 9 and 50?

• A. 60
• B. 30
• C. 15
• D. None of these

Answer 1

Answer:

B. 30

Prime numbers = 11 , 13 , 17 , 19 , 23 , 29 , 31 , 37 , 41 , 43 , 47 , 49

Total terms = 12

Total sum = 360

Mean = $\dfrac{(Total sum)}{(Number of terms)}$

Mean = $\frac{360}{12}$

Mean = 30