From: Sergey Avseyev <sergey.avseyev@...>
Date: 2011-05-12T04:45:42+09:00
Subject: Re: Math cube root

How can you explain this:

    $ irb
    1.9.2p180 (main):001:0> 1000 ** (1.0/3)
    9.999999999999998
    1.9.2p180 (main):002:0> Math.sqrt(100)
    10.0

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