Common factor of 27 12 and 21 July 8, 2019 16 32 64 128 Greatest common factor of 27 12 and 21 What is the greatest common factor of 27 12 and 21 answer Greatest common factor of 12 15 21 and 27 Greatest common multiple Greatest common factor of polynomials Common factor это 1 2 3 4 5 moddalar