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Experiments in probabilities and randomness [My favorite experiment]

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Take a US penny and give it a spin by flicking it with your finger on a tabletop. What are the chances of it coming to rest heads-up once it stops spinning? With an undamaged coin, a spirited flick and a clean level tabletop, 50-50? Or how about if you flip the same coin into the air and let it bounce on the ground and come to a stop? What are the chances of it landing heads-up now, again 50-50? And given the choice of what's behind door number one, should you stick with your first choice or switch to what's behind door number two or door number three? The answers may surprise you.

Published in:

IEEE Instrumentation & Measurement Magazine  (Volume:13 ,  Issue: 3 )