Question

The average of the first nine prime number is

Answer 1

first nine prime numbers : 2 , 3 , 5 , 7 , 11 , 13 , 17, 19 , 23

             we know,

average = sum of numbers/total numbers 

             =(2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 )/9

             = 100/9

             = 11.111