What is the greatest factor 10 and 20 have in common?
1 Answer
Mar 30, 2016
10
Explanation:
20 is divisible by 10.
10 is obviously divisible by 10.
Hence, 10 is a common factor of 20 and 10.
10 cannot be divisible by any number larger than 10.
Hence, 10 is the highest common factor of 20 and 10.
