Abstract visual puzzle (suitable both for kids and adults): Which two rings have identical sets of black and white signs on them? Answer included.
Palabras clave
abstract,
visual,
puzzle,
picture,
riddle,
brain teaser,
ring,
circle,
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black,
white,
signs,
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children,
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adult,
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brain,
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physical exercise,
iq,
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training,
illustration,
vector