Sharp Brains: Brain Fitness and Cognitive Health News

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Brain Teaser for pattern recognition: The Empty Triangle

Here you have a quick brain teaser…which num­ber should be placed in the emp­ty tri­an­gle to  the right?

This puz­zle works your exec­u­tive func­tions in your frontal lobes by using your pat­tern recog­ni­tion, hypoth­e­sis test­ing, and log­ic.

Warn­ing: There can be more than one solution…but make sure what­ev­er you say works in all four tri­an­gles!

The Emp­ty Tri­an­gle

Pattern Recognition Test - Empty Triangle

Let us know how you do!




The top num­ber minus the bot­tom left-hand num­ber is mul­ti­plied by the bot­tom right-hand num­ber to give the num­ber inside the tri­an­gle.

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As seen in The New York Times, The Wall Street Journal, BBC News, CNN, Reuters, and more, SharpBrains is an independent market research firm and think tank tracking health and performance applications of brain science.