Answer: GCF=10
Explanation:
1. To solve this problem you must apply the proccedure shown below:
- First, you must find the prime factorization of 10 and 20,as following:
10=2*5
20=2*2*5=2²*5
- Finally, you must write the prime factors common to 20 and 10 and mutpliy them.
- Therefore, you have that the greatest common factor (GCF) of 10 and 20 have in common is:
GCF=2*5=10