Question 1
On the social network TeeniGram, each user can follow other users. In a group of TeeniGram users, a person is called an “Idol” if everyone else in the group follows that person and that person does not follow anyone in the group. In a group of five beavers, Alan, Don, Frances, Grace and Robin:
- Alan follows Don and Grace.
- Don follows Grace and Robin.
- Frances follows Alan, Grace and Robin.
- Robin follows Alan and Grace.
Who is the idol in this group?
- Alan follows Don and Grace.
- Don follows Grace and Robin.
- Frances follows Alan, Grace and Robin.
- Robin follows Alan and Grace.
Who is the idol in this group?