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Puzzles

One activity that many of our members enjoy is puzzling! You can test yourself for fun with our brainteasers. Our quizzes and conundrums are updated regularly, so do check back on the page for the latest content, and if you get really good at them, why not find out what your IQ is by booking a Mensa Supervised IQ Test?

10/10/25 – Addition Pyramid

The sum of each two adjacent squares gives the number in the square above. What number should go at the top of the pyramid?

 

 

 

 

 

 

Puzzle courtesy of Mensa member Peter Hooton

  • Show Answer

Answer = 147

Let the middle brick on the bottom row = x

Subsequent additions will give the equation 50 + x + 35 + 2x = 70 meaning x = -5

Puzzles for business use

We are also able to supply puzzle content to businesses, tailored to your needs. This can range from one-off media projects for marketing campaigns and content for newspapers, magazines and company websites, to long-running partnerships and licensing agreements.

Find out more by contacting our marketing team, via: communications@mensa.org.uk