Brain teaser: Only a genius can spot the odd number in just 9 seconds
Brainteasers aren't puzzles to play with; they're a mental exercise that tests your thinking, honing your concentration and ...
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Optical illusion: Only a detective’s eyes can spot the odd number '218' in this image
Readers are challenged to spot the odd number in a grid filled with the number 278. The puzzle tests attention to detail and pattern recognition. The brain's pattern recognition may cause ...