cast out nines
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English[edit]
Verb[edit]
cast out nines (third-person singular simple present casts out nines, present participle casting out nines, simple past and past participle cast out nines)
- (arithmetic) To apply a procedure for verifying whether an arithmetic operation is probably correct or certainly incorrect using modulo characteristics of the digit 9.
Translations[edit]
verification of an arithmetic operation
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Further reading[edit]
- Casting out nines on Wikipedia.Wikipedia