Step-by-step explanation:
Greatest Common Factor of 0
Any non zero whole number times 0 equals 0 so it is true that every non zero whole number is a factor of 0.
k × 0 = 0 so, 0 ÷ k = 0 for any whole number k.
For example, 5 × 0 = 0 so it is true that 0 ÷ 5 = 0. In this example, 5 and 0 are factors of 0.
GCF(5,0) = 5 and more generally GCF(k,0) = k for any whole number k.
However, GCF(0, 0) is undefined
