A box has 6 balls, 4 are red. Two balls drawn (without replacement). P(both red):
A1/15
B1/2
CC(4,2)/C(6,2) = 6/15 = 2/5
D1/3
Answer & Solution
Correct answer: C. C(4,2)/C(6,2) = 6/15 = 2/5
P(both red) = 4C2 / 6C2 = 6/15 = 2/5 = 0.4.
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