Question 1194868
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Note that the number of white balls, and the total number of balls, is irrelevant for the question that is asked; we only need to know the number of red balls in each box.<br>
There are 5 red balls in box A and 6 in box B, so when a red ball is selected, the probability that it came from box A is 5/(5+6) = 5/11.<br>
ANSWER: 5/11<br>