What are the number of permutations $P$ of first $N$ natural numbers such that there exists two indices $i$ and $j$ such that $P[i]>j$ and $P[j]>i$?
2026-05-05 23:23:13.1778023393
Numer of permutations of first N natural numbers
242 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail AtRelated Questions in COMBINATORICS
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