Find the average of all the prime numbers between 1 to 50. [Give your answer correct to one decimal place.]

21.9

Total number of prime numbers from 11 to 50 = 15

Sum of all the prime numbers from 1 to 50 ,

=  2 + 3 + 5 + 7 + 11+ 13 + 17 + 19 + 23 + 29 + 31  + 37  + 41 + 43 + 47

= 328

Average = \(\frac{328}{15}\) = 21.867

= 21.9 ( approx)