A number is chosen from the set of numbers S = {11, 12, 13, 14, 15, 16, 17, 18,
A number is chosen from the set of numbers S = {11, 12, 13, 14, 15, 16, 17, 18, 19}. Find the probability
1. the number is even
2.the number is a prime number.
3.the number is odd and less than 17