Please enjoy this fun brain teaser, provided by puzzle master Wes Carroll.
The Empty Triangle:
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!
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: