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Beaver Computing Challenge Sample Problems

The BCC exposes students to a new subject and way of thinking so there isn't a need to prepare for the challenge. However, you can get a feel for the style of the problems by viewing these five sample questions from a variety of grade levels.

Friend Photo

Lucia and her friends are part of an on-line social network.

Below is a diagram describing the relationships among Lucia and her friends. Each line indicates a friendship.


Lucia sends a photo to some of her friends.

Each of those friends sends the photo to all of their friends.

Which of the following groups of friends can Lucia send her photo to so that Jacob is not sent the photo?