Multiple Choice
An urn contains five red R balls numbered 1, 2, 3, 4 and 5, four white W balls numbered 6, 7, 8 and 9, and three black B balls numbered 10, 11 and 12. A ball is drawn from the urn. What is the probability that it is not black?
A)
B)
C)
D)
E)
Correct Answer:

Verified
Correct Answer:
Verified
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