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If nine numbers 1,2,3,4,5,6,7,8,9 are put into a matrix of order 3×3 randomly so that each number occur exactly once. If the probability that the sum of the numbers in atleast one row is greater than 21 is 1p, then the value of p is

Answer» If nine numbers 1,2,3,4,5,6,7,8,9 are put into a matrix of order 3×3 randomly so that each number occur exactly once. If the probability that the sum of the numbers in atleast one row is greater than 21 is 1p, then the value of p
is


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