Question 186780
The problem says that the 1st generation of 
e-mail senders is Deanna, who receives one 
sends emails to 10 other people
So far I have:
generation#  --- emails sent
--- 1 --------------1
--- 2 --------------10
So far, 11 people have gotten emails
Now each of the 10 people send 10 emails
and {{{10*10 = 100}}}
So far I have:
generation#  --- emails sent
--- 1 --------------1
--- 2 --------------10
--- 3 --------------100
So far 111 people have gotten emails
Now, there are 100 people who are going to send
emails to 10 other people.
{{{100*10 = 1000}}}
So far I have:
generation#  --- emails sent
--- 1 --------------1
--- 2 --------------10
--- 3 --------------100
--- 4 --------------1000
So far, 1111 people have gotten emails
If I carry this process to 8 generations, the 8th is:
generation#  --- emails sent
--- 8 --------------10000000
and the total number of people who have gotten emails is
11,111,111