Question: what is a common factor 4 and 6?
Answer: 2x3 = 6 as one “2" is common factor in both 4 and 6 , this the common factor. 4x3 =12 and 6x2=12 So “ 12 “ is the common multiple of 4 and 6 otner. Common multiples can 24 , 30 , 36 so on.