Brain Teaser to test your pattern recognition and other cognitive skills: The Empty Triangle

Please enjoy this fun brain teas­er, pro­vid­ed by puz­zle mas­ter Wes Carroll.

The Empty Triangle:

Question:

Which num­ber should be placed in the emp­ty triangle? 

This puz­zle helps you work out your exec­u­tive functions–activating the pre­frontal cor­tex in your brain–by engag­ing your pat­tern recog­ni­tion and oth­er cog­ni­tive abil­i­ties such as hypoth­e­sis test­ing, and logic.

Let us know how you do!

——–

ANSWER:

3

EXPLANATION:

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 games for adults of any age:

• Top 25 Brain Teasers, Games and Illu­sions for teens and adults of every age
• Brain Teasers for each cog­ni­tive ability