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Exercise 2.7.10

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$(3, 1, 2, 4)$ and $(2, 3, 1, 4)$ keep 4 in place; 6 more even $P$ ’s keep 1 or 2 or 3 in place; $(2, 1, 4, 3)$ and $(3, 4, 1, 2)$ and $(4, 3, 2, 1)$ exchange 2 pairs. $(1, 2, 3, 4)$ makes 12 .

mathchakra

2022-01-16 12:16

Exercise 2.7.10

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