A virus test kit production company produced 5000 kits named Virussa, which detect a specific virus (Virus-A) and sold all of them to a pharmacy.However, they noticed that the company made a mistake during packaging and 100 of them can actually detectthe Virus-B, not the Virus-A. A customer atthepharmacybought 5 of those kits. What is the probability that exactly 2 out of5kitsare wrong and detect the Virus-B?

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