The table below shows the membership type of each of 200 customers and whether the customer uses a mobile app.
| Uses the app | Does not use the app | Total | |
|---|---|---|---|
| Basic | 68 | 12 | 80 |
| Premium | 42 | 78 | 120 |
| Total | 110 | 90 | 200 |
One customer is selected at random. The event B B\,B is that the customer has basic membership, and the event U U\,U is that the customer uses the app.
Find P(B∩U)P(B \cap U)P(B∩U).
Find P(B∪U)P(B \cup U)P(B∪U).
Find P(B′∩U′)P(B' \cap U')P(B′∩U′).