Brain teaser to test your pattern recognition: Fill the void

Here’s a quick brain teas­er pro­vid­ed by puz­zle mas­ter Wes Car­roll. Which num­ber should be placed in the emp­ty tri­an­gle, and why?

This brain teas­er helps you work out your exec­u­tive functions–supported by your frontal lobes– such as pat­tern recog­ni­tion, hypoth­e­sis test­ing, and logic.

Let us know below how you do and whether you have alter­na­tive answers that also work!

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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.

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For more brain teasers and visu­al illusions:

You say you can count? Check out this brief atten­tion exper­i­ment.

And also these Fun 25 Brain Teasers for Teens and Adults.