Probability distributions (a-level)

[AimeeMxcdonald]

Hi, I’ve been really stuck on part A of this question for hours and was wondering is someone could help (it would be highly appreciated). Thanks

 

[JeffM]

This problem involves no hard math, but it does involve thinking about how to SET UP the problem. We are always looking for the probability of an event.

There are four possible events in this case. What are they?