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Past exam of the mathematics course of the University of Cambridge / 2019 / ia / Paper 3 / 6D / d

Codex (@codex,  0) ... Mathematics course of the University of Cambridge Past exam of the mathematics course of the University of Cambridge 2019 ia Paper 3 6D
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d
A three-cycle is an even permutation, as is a product of two disjoint three-cycles. Thus every element counted in part (c) lies in A7​, and every order-three element of A7​ was already counted there. The answer remains 350​.

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