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Inversions and Even Odd Permutations

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Text Comments (7)
RiQ - UR Class (4 months ago)
what if ( 2, 3, 3,4 ,1) for 1,2,3,4,5 ??
Nick Anderson (3 months ago)
that's not a permutation (i.e. reordering) of the set you gave because it includes 3 twice and doesn't include 5
SAGAR SUMAN (4 months ago)
Good work..!
andrew chiziba (7 months ago)
You just saved the day,thanks.
because_why_not (7 months ago)
Alex Azazel (1 year ago)
How come nobody has explained this to me before. Thanks.
Anes P.A (2 years ago)
Nice explanation ... I suggest a good practice qn for you Qn) Let A= { 1,2,3,4,5,6,7} then the permutation {6,4,2,1,5 } is a) odd permutation b) even permutation c) cannot predict d) none answer is a) with 7 inversions... Thanks Anes

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