Hello. Needs help with disjoint cycles.

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Charles007
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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 now how to do in 2 row permutations, with right to - left. can anyone tell me , how to express it without transfer it into 2 row permutations.

One more question, How do we find out it's odd or even permutaions.

Thank you. I am doing my past exam paper, university doesn't give us answer.
 
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