Question

Find the average of all prime numbers between 20 and 40

Answer 1

Answer:

30

Step-by-step explanation:

Prime numbers between 20 and 40 are :

         23 , 29 , 31 and 37

Their sum = 23 + 29 + 31 + 37

                 = 52 + 68

                 = 120

Number of terms = 4

Therefore,

   Average = sum of terms / number of term

        = 120 / 4

        = 30

Answer 2

Answer:

The prime numbers between 20 and 40 are,

23,29,31,37

Average = sum of all observations /no .

= 23 + 29 + 31 + 37/4

120/4

30.