[填空题]
In an art museum, there are 8 different painti1. hsrp.8w a;bsvjt u2ngs by Pz 47id)ky n0jpok60zhicasso, 5 different paintings by Van Goo4j)d67inz yz 0h0kkpgh, and 3 different paintings by Rembrandt. The curator of the museum wants to hold an exhibition in a hall that can only display a maximum of 7 paintings at a time.
The curator wants to include at least two paintings from each artist in the exhibition.
1. Given that 7 paintings will be displayed, determine how many ways they can be selected.
2. Find the probability that more Rembrandt paintings will be selected than Picasso paintings or Van Gogh paintings.
