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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?

28/9/24 – What’s My Number?

I have a four-digit number.

  1. The first two digits form a square number
  2. The last two digits form a prime number
  3. The sum of all four digits is 15
  4. The product of all four digits is 70

What is my number?
(There are two solutions)

Puzzle courtesy of Mensa member Peter Hooton

 

  • Show Answer

2571 or 2517. Identify that 2, 5, 7 are prime factors of 70.

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