Quote:
Originally Posted by DARISC
Last edited by DARISC; Today at 09:25 AM..
No visualization needed.
Three circumferences of small coin = one circimference of large coin.
Rolling small coin for three circumferences (three revolutions) brings it to the end of the circumference of the the large coin.
Rolling it one more circumference (revolution) puts it back in its original position, relative to the large coin.
Four revolutions is the answer.
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Such strong (post edit) confidence you have. What happened to your 'oops' post?
