How long are your employees distracted from work?

    Passing by the workplaces of your colleagues, you involuntarily notice that instead of the faded IDE interface, which, in fact, the programmer is supposed to be for most of the working day, you see the bright design of a news site on the screen.

    In general, this is normal - a person must sometimes switch. But it’s interesting - how often does he do it? And having obtained T. Korn’s math reference book from a shelf, he undertook to solve the following abstract problem:

    The manager 10 times a day randomly walks past an employee. An employee randomly sometimes gets distracted from work to read news on their favorite sites. Assess what guaranteed time an employee spent reading per day with a probability of 99% if he fell for reading 1,2,3..10 times.

    And here is what I got:

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