The common divisors of two numbers are exactly the divisors of what?
ATheir GCD
BTheir sum
CTheir product
DTheir LCM
Answer & Solution
Correct answer: A. Their GCD
1. Every common divisor divides the greatest common divisor.
2. Conversely every divisor of the GCD divides both numbers.
3. This is not true for their sum, product or LCM.
_Source: Wikipedia, Greatest common divisor, section Definition_
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