Black balls and 3red balls are there in the basket.What is the probability that red has taken in the 4th pick without replacement
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total balles =4
probability of black balls = 3/4
probability of black balls = 3/4
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A black and 3 red
Total 4
picking black ball at 4th turn
pick 3 balls first,then black has to be picked.
Required probability=(3c3*1c1)/4c1
=1/4
Total 4
picking black ball at 4th turn
pick 3 balls first,then black has to be picked.
Required probability=(3c3*1c1)/4c1
=1/4
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