Daily Challenges

Using a formula isn't always the easiest way to find an area. Adding lines instead can help to see things more clearly.

A highway on-ramp is designed for a certain acceleration sustained over its length. Can you find the connection between them?

In a magic square, the sums of every row, column, and diagonal are equal. What happens in a multiplication magic square?

The paths of electricity through a CPU are changing all the time. Does that mean the current flowing through it is changing as well?

Blankets are one of the great inventions of mankind, keeping us warm as we sit on beds, couches, and chairs. But will they do that for everything?

Both players make the best possible moves to avoid eating the lemon. Who gets stuck with the sour fruit?

It's not necessary to solve this puzzle completely to find the answer — all that's needed is a correct relationship among the digits.

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