Question: (13.) A computer virus attached to an e-mail can spread rapidly. Once the attachment is opened by the person who receives the e-mail, the

(13.) A computer virus attached to an e-mail can spread rapidly. Once the attachment is opened by the person who receives the e-mail, the virus will cause an e-mail with the infected virus to be sent to everyone in the recipient's address book. On average, a person has 15 addresses in his or her address book. One person sends an c-mail with an attached virus every minute to someone else. How many people would receive the virus at the end of three hours?

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