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Smaller and smaller squares fill in the area around this square’s diagonal. What fraction of the large square’s area is shaded?

El the Elephant wants to lift his five friends. Will this pulley suffice?

Some of these Londoners are humans, and some are werewolves. Look for contradicting statements to find who's telling the truth and who isn't.

You can get zero by changing some of the plus signs. Which operation must come first?

Jeremiah wants to use every mode of transportation while sight-seeing. Where should he begin?

No car can stop instantaneously. How long does it take for the BrillCar to fully stop?

The participants in this Numbers Bunchers puzzle tell you what their products aren’t divisible by. How can you distribute all the numbers?

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