Question

MEDAL GIVEN!! please explain properly
Suppose a traveler wanted to visit a museum, an art gallery, and the state capitol building. 45-minute tours are offered at each attraction hourly from 10 a.m. through 3 p.m. (6 different hours). Solve the problem, disregarding travel time.
In how many ways could the traveler schedule two of the three tours in one day?

Answer 1

I am not the best person for this

need combinations etc
the long way is to do the probability tree

Answer 2

and how would do that