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Omni-MATH / Compute the number of permutations π of the set 1,2,…,10 so that for all (not necessarily distinct) m,n∈1,2,…,10 where m+n is prime, π(m)+π(n) is prime. · Discussion

Discussing Compute the number of permutations π of the set {1,2,…,10} so that for all (not necessarily distinct) m,n∈{1,2,…,10} where m+n is prime, π(m)+π(n) is prime. · Omni-MATH

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