Calculate the number of permutations σ = σ1σ2σ3σ4σ5σ6 in which σ1 = 2 or 4, σ2 = 1 or 5, σ4 = 2 or 4, σ5 = 6, σ6 = 1 .
Calculate the number of permutations σ = σ1σ2σ3σ4σ5σ6 in which
σ1 = 2 or 4,
σ2 = 1 or 5,
σ4 = 2 or 4,
σ5 = 6,
σ6 = 1 .
Nov 19, 2021