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Puzzle #130: Can you solve this civilisation’s sum?

8 September 2021

Can you solve this week’s fiendish puzzle Arithmagic? Plus the answer to puzzle #129

Stingrays’ bulging eyes and mouths make them much faster swimmers

2 September 2021

Stingrays have protruding eyes and mouths, which seem like they would make swimming less efficient, but they actually create vortices that let the rays swim faster

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Puzzle #130: Can you solve this civilisation’s sum?

Stingrays’ bulging eyes and mouths make them much faster swimmers

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