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I am an engineer
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Out of 20! permutations of numbers 1 to 20,one permutation is selected. What is the probability that such a permutation has a 2 appearing before any other even number?
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I am an engineer: Out of 20! permutations of numbers 1 to 20,one permutation is selected. What is the probability that such a permutation has a 2 appearing before any other even number?
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