You and I go out to eat at a conveyer-belt sushi restaurant. It serves four types of sushi: ahi roll, Boston roll, caterpillar roll and dragon roll. We each have access to our own conveyer belt that ...

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If you are looking for engaging experiences that aren’t overwhelming, try the plethora of puzzle apps available. There are ...

The hour, minute and second hands of this clock are all the same length and move smoothly in a circle. The dial contains hour and minute markers, but the numbers are missing. Therefore, it’s ...

I’ve been out of school for decades, and I don’t spend my days solving equations (I’m more of a word person). Still, I like to think I have a solid grip on basic math: I can usually gauge whether a ...