BY MARTIN GARDNER Here is an amazing coincidence with cards that was discovered by Colm Mulcahy, an Associate Professor of Mathematics at Spelman College in Atlanta, Georgia. It is a great trick to teach a child. He or

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Date: 2014-09-29 19:38:14		BY MARTIN GARDNER Here is an amazing coincidence with cards that was discovered by Colm Mulcahy, an Associate Professor of Mathematics at Spelman College in Atlanta, Georgia. It is a great trick to teach a child. He or Add to Reading List Source URL: martin-gardner.org Download Document from Source Website File Size: 1,41 MB Share Document on Facebook