A security code consists of a person's first and last initials followed by four digits.
(a) What is the probability of guessing a person's security code on the first try?
(b) What is the probability of not guessing a person's security code on the first try?
(c) You know a person's first name and that the last digit is odd. What is the probability of guessing this person's security code on the first try?
(d) Are the statements in parts (a)-(c) examples of classical probability, empirical probability, or subjective probability? Explain your reasoning