Mensa's Most Difficult Number Puzzles: Prove your logical and numerical abilities against 200 fiendish problems
by Dr Gareth Moore,Mensa Ltd
ISBN 13: 9781802791884
Format: Paperback (144 pages) Publisher: Welbeck Published: 07 Jul 2022
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Mensa's Most Difficult IQ Puzzles: Take on the ultimate challenge by solving these demanding conundrums
ISBN 13: 9781802791877