Final answer:
The probability of a randomly selected person not having their birthday in May is 334/365 days.
Therefore, the correct answer is: option 1) 334/365
Step-by-step explanation:
If a person is randomly selected, the probability that his or her birthday is not in May, assuming we ignore leap years, can be calculated by determining the ratio of the number of days in a year that are not in May to the total number of days in a year.
May has 31 days. Since we are not considering leap years, a year has 365 days.
Therefore, the number of days that are not in May is 365 - 31
= 334 days.
The probability that a person's birthday is not in May is the number of days not in May divided by the total number of days in a year, which is: 334/365
So, option 1 is correct.