There are 30 chickens in the freezer of the local grocery store, of which 25 are fresh and the other 5 are old. You select 2 chickens at random. What...

There are 30 chickens in the freezer of the local grocery store, of which 25 are fresh and the other 5 are old. You select 2 chickens at random. What is the probability that (use a tree diagram)

1. both are fresh

2. the first is fresh

3. the second is fresh

4. at least one is fresh5. neither is fresh