It is the elite round table of intelligence and notoriously difficult to pass with the top two per cent of the country's cleverest allowed entry.
But with an estimated 1.6 million people in the UK eligible to join, Mensa are inviting people to pit their wits against a rigorous IQ test in Norwich on Saturday.
Aspiring members can meet at the Friends Meeting House in Upper Goat Lane at 10.30am for two supervised tests.
In the meantime why not try our quiz.
If you are able to emerge from these fiendishly-difficult questions unscathed, then congratulations – you could join the club's elite ranks.
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