Instructions & Question One:

16. B is the set of natural numbers greater than 100.computational Exercises For L Exercises 9- 22, write each set using the roster method. Pay attention to repeated elements, and THINK about why you don't need to list the same element more than once. You may have to do a bit of Internet research for some problems.\fFor W Exercises 51- 60, use the following information. U = (x/x is a natural number less than 20} A = (xx is an odd natural number less than 16} B = {xx is a prime number greater than 5} (Note: The prime numbers less than 20 are 2, 3, 5, 7, 11, 13, 17, and 19.) Find the cardinality of each set