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if A is a proper subset of B and B is a proper subset of C. Does it follow that a is a proper subset of C??illustrate it in a Venn diagram...(if you cannot illustrate it in a Venn diagram,please ,just illustrate the elements of each set..) THANKS!!

Sagot :

Yes, it is obvious in the diagram attached. Since A is part of B, and the whole set B is a proper subset of C, then A as well.
View image Mlcparra16