Become a member

My Mensa
Become a member
My Mensa
9109_Mensa_80 logo_FINAL
Facebook Twitter Linkedin

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?

Week 21 – Thursday

What number should replace the question mark?

27   28   32
93   54   40
48   64   48
67   84   64
55   50   ?

  • Show Answer

0. Across each row, multiply the first two digits then multiply by two to get the next number, do the same with the second number to get the third number.
((2×7) x2 =28, (2×8) x2 = 32)

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