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Ω={(r,r,r)(r,r,o)(r,o,r)(o,r,r)(o,o,r)(o,r,o)(r,o,o)(o,o,o)}
b)
A={(o,o,r)(o,r,o)(r,o,o)}
|A|=3
P(A)=3/8
c)
P(B)=7/8
2.
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