Question

Find the fraction and the ratio of No. Of prime numbers to the numbers up to 50

Answer 1

3/ 10

Explanation:

Count of numbers up to 50 = 50

Prime numbers up to 50 :

{2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47}

Count of prime numbers up to 50 = 15

Hence, ratio of prime numbers to all numbers ;

15 : 50

3 / 10