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18 October, 04:10

Chain emails are emails with a message suggesting you will have good luck if you forward the email on to others.

Suppose a student started a chain email by sending the message to 3 friends and asking those friends to each send the

same email to 3 more friends exactly 1 day after receiving it.

b. Which day is the first day that the number of people receiving the email exceeds 100?

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  1. 18 October, 05:37
    0
    b.

    starts with student-day one

    3*3=9-day two

    9*3=27-day three

    27*3=81-day four

    81*3 = over 100 - day five

    it's day 5 unless you count the first student sending the message as day 0, if so then your answer is day 4
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