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<p>In mathematics, a <b>dyadic rational</b> or <b>binary rational</b> is a number that can be expressed as a <a href="page.php?w=fraction">fraction</a> whose <a href="page.php?w=denominator">denominator</a> is a <a href="page.php?w=power_of_two">power of two</a>. For example, 1/2, 3/2, and 3/8 are dyadic rationals, but 1/3 is not. These numbers are important in <a href="page.php?w=computer_science">computer science</a> because they are the only ones with finite <a href="page.php?w=binary_representation">binary representation</a>s. Dyadic rationals</p><p>
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