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Brainteaser so confusing people refuse to believe there's correct answer – can you solve it?
A brainteaser has been shared on Reddit that asks players to work out how all students in a teacher's classroom can receive a ...
People baffled by maths brainteaser that 'only those with high IQ can solve'
A social media user has set a tricky brainteaser to test whether people have a high IQ or not - but it has left people ...