Logic puzzles, riddles, math puzzles and brainteasers - pzzls.com

Vandaag is het 21 November 2017

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Keep the money rolling - math puzzle of the day

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   Rating: 2.4/5.0

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You put two 1 dollar coins on a table, such that they touch each other (see the figure). While you fix the lower coin with your finger, you will turn the upper around it (without slipping). Somewhat later the moving coin will be back in his original position. How many rotations on his midpoint did the moving coin make? coin

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