What is the highest common factor between 15 and 18 July 8, 2019 16 32 64 128 What is the highest common factor of 15 18 What is the highest common factor of 12 15 and 18 What is the highest common factor of 10 15 and 18 What is the highest common factor of 15 18 and 21 What is the highest common factor hcf of 12 15 and 18
