Can you solve the cheating royal riddle? - Dan Katz
3 years ago
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[{"text":"-- You're the chief advisor to an eccentric king who needs to declare his successor. He wants his heir to be good at arithmetic,\u00a0..."}]
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{"title":"Can you solve the cheating royal riddle? - Dan Katz by TED-Ed 4,413,015 views 3 years ago 5 minutes, 49 seconds","duration":"5 minutes, 49 seconds"}