In the spring, a voluntary garbage collection campaign is taking place in the municipalities. In one place, 11 volunteers showed up, and the Mayor decided to carry out the campaign within two days. On the first day, 5 volunteers will pick up rubbish, on the second also 5, but not all volunteers have time for both days.
How many ways can they select candidates for the first day?
How many ways can they select candidates for the second day if a maximum of one volunteer from the first day is involved?
