A box contains marbles of three different colors :8 blacks ,6 white , 4 red.three marbles are selected at random without replacement.find the probability of three black marbles.A red,black ,and a white marble in that order.3)A red marble and 2 white marble.
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1
Answer:
Number of black marbles = 8
Number of white marbles = 6
Number of red marbles = 4
Total number of balls = 8+6+4 =18
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8
Answer:
Probability of selecting a blue ball in 1st attempt = 155
Probability of selecting a red ball in 2nd attempt = 146
Probability of selecting a white ball in 3rd attempt = 134
They can re-arrange themselves in 2!4! ways.
Probability = 2!4!×155×146×134=9148
Explanation:
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