We are told that 4 people have exactly 1 friend. This would

[Anne1276]

I understand everything except the last part:

* We are told that 4 people have exactly 1 friend. This would account for 2 "friendship" relationships (e.g. AB and CD).
* We are also told that 3 people have exactly 2 friends. This would account for another 3 "friendship" relationships (e.g. EF, EG, and FG).
o Why couldn't it be AC, BC, BD, AF (this shows A having 2 friends, B having 2 friends, and C having 2 friends)

* How do I account for the five friendships?

THANKS!

[Anne1276]

Ok, I saw cityboy's response to someone else. Now I understand the five friends thing. THanks!

[Guest]

I understand everything except the last part:

* We are told that 4 people have exactly 1 friend. This would account for 2 "friendship" relationships (e.g. AB and CD).
* We are also told that 3 people have exactly 2 friends. This would account for another 3 "friendship" relationships (e.g. EF, EG, and FG).
o Why couldn't it be AC, BC, BD, AF (this shows A having 2 friends, B having 2 friends, and C having 2 friends)

* How do I account for the five friendships?

THANKS!