Express as the product of disjoint cycles: a. (1,2,3)(4,5)(1,6,7,8,9)(1,5) b. (1,2)(1,2,3)(1,2) I know how to do in 2 row permutations, with right to - left. can any one tell me , how to express it without transfer it into 2 row permutations. 2 disjoint product. eg. (123)(234) calculate from right to left. how ? I know transfer it into 2 row permutations, (1-2,2-3,3-1,4-4)* (1-1,2-3,3-4,4-2) Thank you. I am doing my past exam paper, university doesn't give us answer.