A box contains 5 red and 4 white balls.2 balls are drawn successively from the box without replacement and it is noted that the second one is white. What is the probability that the first is also white
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Answer:
3/8
Step-by-step explanation:
5red + 3white = 9 balls
2nd ball drawn is white so total white ball is 3 and total ball left is 8
so probability of white ball = 3/8
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