How do you balance the environmental impacts and nutritional benefits of different foods?
Frosty the Snowman is melting. Can you work out how much less snow he contains when he is at half his starting height?
Can you use the given information to work out how much plastic a family recycles?
Can you find the most efficient way to connect four towns?
Can you solve the clues to find out who's who on the friendship graph?
How can you decide if a graph is traversable?