If the cards shown here are rearranged to form four new poker hands of five cards each, what is the lowest possible winning ...

Subscribe to Scientific American to learn and share the most exciting discoveries, innovations and ideas shaping our world today.

A brain teaser challenge is a type of IQ test that mostly involves solving a puzzle, cracking a code, finding a hidden object ...

Math is not everyone’s favorite, understandably. Hours of math homework and difficult equations can make anyone sour on the subject. But when math problems are outside of a school setting, there’s no ...

A Brain teaser is a type of puzzle, which is a short, playful puzzle designed to stretch your mind and make you smile. It ...

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 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When 2D puzzles are no longer exciting, 3D brain teasers are the way. These handheld puzzles require ...

All the Latest Game Footage and Images from Triz: Sacred Geometry Puzzles Disentangle the color web of mysterious geometric interweaving and discover fascinating hypnotic shapes. Distract from reality ...