Forbes contributors publish independent expert analyses and insights. I share strategies for getting ahead financially and building wealth. Do you have a jar of loose changing at your house and you're ...

A mathematician explains how to get a fair result from a biased coin. Nov. 7, 2010 — -- I've always loved the idea of coin flips, and hence this paean to a few of their properties. One of the ...

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Most banks offer free coin exchange services to account holders, though you may need to roll coins yourself. Self-service coin-counting machines are more commonly found at local banks and credit ...