In a bag there are 10 black & 10 white balls. A ball is drawn at random & 5 extra balls of same color as of drawn ball are added in the bag along with the drawn ball. Now another ball is drawn and replaced in the bag but 4 balls of color same as drawn ball are removed from the bag. Again a ball is drawn and found to be white then the probability that the second drawn ball was black, is
A
B
C
D
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Verified by ExpertsThe correct answer is:
A
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