Mensa is an internationally renowned organization for high IQ. The only qualification you need to become a member is to score in the top 2% of the scale of a properly formatted IQ test. Mensa has over 100,000 members worldwide in one hundred countries, with approximately 40,000 of its members making up British Mensa.
The tests in the Mensa book will challenge even the sharpest mind. Give it your best to cope with this collection that contains over 200 tests to assess the power of your brain.
They are fun tests, but not easy at all. They do not require special skills other than common sense, basic reading and writing knowledge, and a strong willingness not to give up on the effort. If you manage to activate them, you may be able to become a prospective member of Mensa.