Inclusion of sets Let A, B and C be sets. Prove that if $A \subseteq B$, then $A \cap C \subseteq B \cap C$ and $A \cup C \subseteq B \cup C$. (a) Thinkers-explainers (b) Questioners-writers
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Step 1: Given that A is a subset of B, we want to prove that the intersection of A and C is a subset of the intersection of B and C. Show more…
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