What is the minimal set of coins you should carry to always make exact change?

Posted by ??iu on Stack Overflow See other posts from Stack Overflow or by ??iu
Published on 2010-05-25T01:24:26Z Indexed on 2010/05/25 1:31 UTC
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optimization

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math

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sets

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life-hacks

US coin values:

.01, .05, .10, .25 (*)

What configuration(s) of US coins can be used to match every value from .01-.99 using the fewest coins possible?

How can you find an answer?

* note: there is actually a .50 coin but it is very rarely seen

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