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Definition of Rule of three

Babylon English

method for calculating the numerical value of a variable dependent on three given terms
Rule of three Definition from Language, Idioms & Slang Dictionaries & Glossaries
hEnglish - advanced version

rule of three
(arith.), that rule which directs, when three terms are given, how to find a fourth, which shall have the same ratio to the third term as the second has to the first; proportion. see proportion, 5 (b)..
see rule

Rule of three Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
Rule of three may refer to:

Science and technology
  • Rule of three (C++ programming), a rule of thumb about class method definitions
  • Rule of three (computer programming), a rule of thumb about code refactoring
  • Rule of three (mathematics), a method in arithmetics
  • Rule of three (medicinal chemistry), a rule of thumb for lead-like compounds
  • Rule of three (statistics), for calculating a confidence limit when no events have been observed

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