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∅ {1,4,5} {1,2,3,4,5} {2,3}
{1,2} {2,3} {0,1,2} {1,2,3}
{1,2,3} {0,2,3} {0,1,2} {0,1,3}
MN NM M.∩N.={2,3} M.∪N.={1,4}
{0,4} {3,4} {1,2}
{1,2,3} {1,3,4} {1,2,4} {2,3,5}
{1,3} {2,3} {1,2} {1,2,3}
{0,1,2} {0,1,3} {0,2,3} {1,2,3}
{1,2,3,5} {1,2,3,4} {2,3} {1}
{1,2,3} {3,4,5} {1,2} {4,5}
M.⊆N N=M M∩N={2,3} M∪N={1,4}