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

Let us know how you do!

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ANSWER:

3

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

More brain teasers and visual illusions

• Test your Brain and Mind with these 9 Clas­sic Opti­cal Illusions
• Top 25 Brain Teasers, Games and Illu­sions, for Teens and Adults of Any Age

Book to learn more about your brain and how to keep it in great shape

• The Sharp­Brains Guide to Brain Fit­ness: How to Opti­mize Brain Health and Per­for­mance at Any Age