[" 19.2n boys are randomly divided into ...

[" 19.2n boys are randomly divided into two "],[" subgroups containing n boys each.The "],[" probability that the two tallest boys are in "],[" different groups is "],[[" 1) "(1)/(2)," 2) "(n)/(2n-1)," 3) "((n-1))/((2n-1))" 4) "(2n)/(2n-1)]]

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[" 19.2n boys are randomly divided into two "],[" subgroups containing n boys each.The "],[" probability that the two tallest boys are in "],[" different groups is "],[[" 1) "(1)/(2)," 2) "(n)/(2n-1)," 3) "((n-1))/((2n-1))" 4) "(2n)/(2n-1)]]

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