[填空题]
In an art museum, there are 8 different paim5v4na, a iutbd;jp4mmcpj(/ e2 9ud3ntings8xt /x 71w*ysntxw 9gs by Picasso, 5 different paintings by Van Gogh, and 3 different paintings by Rembrandt. The curator of the museum wants to hold an exhibition in a hall that can only 7s 9n stx18yx g/tx*wwdisplay 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.
