Can you solve the cheating royal riddle? - Dan Katz

Practice more problem-solving at -- You’re the chief advisor to an eccentric king who needs to declare his successor. He wants his heir to be good at arithmetic, lucky, and above all else, honest. So he’s devised a competition to test his children, and ordered you to choose the winner. The future of the kingdom is in your hands. Can you find the worthiest successor? Dan Katz shows how. Lesson by Dan Katz, directed by Artrake Studio. Animator’s website: