A secretary types 10 different letters and addresses 10 corresponding envelopes. If he is in a hurry

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A secretary types 10 different letters and addresses 10 corresponding envelopes. If he is in a hurry and randomly inserts the letters into the envelopes, what is the probability that exactly 9 of the letters are in the correct envelopes?

Express all probabilities as fractions

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Essentials Of Statistics

ISBN: 9780321924636

5th Edition

Authors: Mario F Triola

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Question Posted: Mar 26, 2024 03:00 AM

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A secretary types 10 different letters and addresses 10 corresponding envelopes. If he is in a hurry

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To solve this problem we can use the principle of derangements also known as subfactorials A derange...View the full answer

Essentials Of Statistics

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