alleryTwo numbers are coprime when their greatest common divisor equals what?
AOne
BZero
CTwo
DTen
Answer & Solution
Correct answer: A. One
1. Coprime (relatively prime) numbers share no factor above 1.
2. So their greatest common divisor is 1.
3. Example: 9 and 28.
_Source: Wikipedia, Greatest common divisor, section Coprime numbers_
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