20 customers are eating dinner at a local restaurant. The restaurant accepts cash or credit as forms of payment. Of the 20 customers, 4 have enough cash to pay for their meal, 16 have a credit card, and 3 have enough cash and a credit card. Using this information, answer the following questions. 1. What is P(A), the probability that a customer has enough cash? 2. What is A(B), the probability that a customer has a credit card? 3. What is P(A and B), the probability that a customer has enough cash and a credit card? 4. What is P(A or B), the probability that a customer has enough cash or a credit card?​