Question

Find the percentage of prime number between 1 to 20​

Answer 1

Answer:

the Midway point between 1 and 30 is 15 and a half, so we would expect our average of primes to be somewhere in that area. The 10 prime numbers between 1 and 30 are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. When we add the 10 numbers we get a total of 129. Dividing by 10 to get the average we get 12.9, which is in the general area of 15.5. Considering that prime numbers become more and more rare as they rise, we would probably expect that the average would skew toward the lower side. Reiterating, the average of the prime numbers between 1 and 30 is 12.9.