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[SoOoMa1990]

Urn 1 contains 5 red balls and 3 black balls. Urn 2 contains 3 red balls and 1 black
ball. Urn 3 contains 4 red balls and 2 black balls. If an urn is selected at random and
a ball is drawn. Find the probability it will be red?
A)
2
3
B)
49
72
C)
23
72
D)
49
24 ..
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