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?

1/7/24 – Marbles

I have only red, yellow and blue marbles.

1/7 of the total are red.

If I remove 12 yellows then 1/4 of the total will be red.

If I remove a further 4 blue then 1/3 of the total will be red.

How many marbles of each colours did I start with?

Puzzle courtesy of Mensa member Peter Hooton

  • Show Answer

4 red. 16 yellow. 8 blue.

If x is the total number of marbles, then 𝑥/7 = (𝑥 −12 )/4 (clues 1 & 2) so 𝑥=28

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