Flex your math muscles with this weekend’s brain teaser. Play now.

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If you’ve ever shuffled a deck of playing cards, you’ve most likely created a unique deck. That is, you’re probably the only person who has ever arranged the cards in precisely that order. Although ...

Array formulas let you perform calculations across entire ranges of data in a single formula. Hence, you can handle lightning-fast lookups, filtering, and sorting with just one po ...

A growing number of people are turning to ibogaine—an obscure and controversial psychedelic—as a treatment for opioid addiction. WSJ visited a clinic in Mexico to follow one patient’s journey. Photo: ...

“There are three boxes,” begins the puzzle, posted on Reddit this past weekend and no doubt everywhere else at some point too ...