25. (Opt.) In a Christmas display, the probability that all
lights are the same color is 0.50, that 2 colors are used
is 0.40; and that 3 or more colors are used is 0.10. If a
sample of 10 displays is selected, find the probability
that 5 have only I color of light, 3 have 2 colors, and
2 have 3 or more colors