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rule of three
noun
- the method of finding the fourth term in a proportion when three terms are given.
rule of three
noun
- a mathematical rule asserting that the value of one unknown quantity in a proportion is found by multiplying the denominator of each ratio by the numerator of the other
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Word History and Origins
Origin of rule of three1
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Example Sentences
Boys were never taught the rule-of-three until after they had learnt addition.
It is as if we were to talk of the color of sound, or the longitude of the Rule-of-three.
A man who's seen Injin fightin' don't go much on this here West Point fightin' by rule-of-three—but that ain't here or there!
He got into the rule-of-three without having learned numeration, addition, subtraction, and division.
When it was found that he could not do decimals, he was put back to the rule-of-three, and then pronounced incurable.
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[ak-suh-lot-l ]
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