By considering the multiplication tables, D3 and S3 groups has one element of order 1, 2 elements of order 3 and 3 elements of order 2. then a group of order 6 are isomorphic from D3 to S3. Solution By considering the multiplication tables, D3 and S3 groups has one element of order 1, 2 elements of order 3 and 3 elements of order 2. then a group of order 6 are isomorphic from D3 to S3..