Math 312/ 27.2-3

I’m working on a Probability exercise and need support.

Hello, I need help working on these exercises and make sure to show work as much as you can.

27.2: 21 (hint: list out the sample space), 24, 26

27.3: 2, 4, 5

Here is the like of the book that you can use: (https://drive.google.com/file/d/1QAJfAhBkxIvEOZpy9IgZ0bh-KdqiFi0G/view?fbclid=IwAR06IsBsgLkCPXoxE-vEQHTtbB8Utwdq9tUa317W4pi5EklnrJC6cwJD3uM)

Thank you.