U A B II III I 34 57 56 66 35 95 IV 94

Look familiar?

(A and B are disjoint sets). U A B 2 4 6 8 1 3 5 7 I II 9 10 III

U A B II III I 1 2 3 4 IV 5

Look familiar?

\ \ \ \

U A B

U A B II III I 2 1 3 5 4 6 IV

U A B II III I 2 1 3 5 4 6 IV

U A B II III I 2 1 3 5 4 6 IV

I Not exact, but similar.

U A B C 5 6 1 2 3 7 4

U A B C 5 6 1 2 3 7 4

U A B C 5 6 1 2 3 7 4

U A B C 5 6 1 2 3 7 4

U A B C 5 6 1 2 3 7 4

U A B C 5 6 1 2 3 7 4

= {2,4,6} / / / /

/ / / = {1,3,5,7}

C’= {3,4,7} D’= {1,5,6,7}

= {1,2,3,4,5,6}

= {1,2,3,4,5,6} = {2}

= {1,2,5,6,7} = {1,2,3,4,5,6} = {3} = {2} / / C = {1,2,5,6} D’= {1,5,6,7}

= ∅ = {1,2,3,4,5,6} = {2} = {1,2,5,6} = ∅ ∅ ∩ C = C = {1,2,5,6} = ∅

= {1,2,3,4,5,6} = {2}

= {1,2,3,4,5,6} = {2}

U M N