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In cities, we often care more about walking than absolute distances. What's the optimal place for Xavier's cafe?
Doctor Brilliantstein wants her creation's feet to support as much weight as possible. How can she achieve her goal?
In this game, players move a token across a square grid. Do we know the winner before the game even starts?
We know the total area of this infinite stack of shrinking triangles. With that information, we can find the area of the triangle they’re inside of.
Humans always tell the truth, and werewolves always lie. Can you determine which of these Londoners is which?
The air resistance reduces the rocket's energy. By how much does the rocket's maximum altitude decrease?
A graph represents the slopes of another graph. Which graph's slopes does it represent?
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