loyla
posted by rajshekar .
A bag contains one black ball and one white ball. Another black ball is put into the same bag and bag is shuffled. The first ball pulled out the bag is a black one. What are the chances of the next ball to be pulled out to be black?

There is a black and a white ball left in the bag after pulling out the first.
Can you find the probability of pulling out a black ball from a bag containing one black and one white ball?
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