Please help me with questions 10- 13!Thank u!

The following 3 questions (Q10 to (12) are based on the following information: John has the phone numbers of many young ladies. Some of these young ladies are blonde and others are brunettes. In addition, John knows that some are single while others have boyfriends. The exact breakdown is as follows: Blonde Brunette Single 12 18 Taken 8 12 Find the following probabilities: Q10: What is the probability of selecting someone who is taken, given that they are blonde? Q11: What is the probability of selecting a single brunette? Q12: What is the probability of selecting someone who is brunette, given that they are taken? The following 5 questions (Q13 to Q17) are either "True" or "False" Q13: The 'Subjective View' uses an analysis of possible outcomes to define probability