Find out about yourselfJoin Mensa nowBrowse our shop

Mensa Group

Were you previously a member? Rejoin

Are you a member of another National Mensa? Become a Guest member

Mensa Brainteasers

Week 43 - Thursday



Assume you are using a basic calculator and press the numbers in the order shown, replacing each question mark with a mathematical sign.

Plus, minus, multiply and divide can each be used once only.

What are the highest and lowest numbers you can possibly score?



The answer to this puzzle will be revealed on 28.10.13

Have you got what it takes? Try the Mensa Workout here

28 Oct 2013
Reveal answer

38 using minus, divide, plus and multiply. Minus 30 using plus, divide, minus and multiply