Question
Let $A=\{$ June, Janet, Jill, Justin, Jeffrey, Jello\}, $B=\{$ Janet, Jello, Justin\}, and $C=\{$ Sally, Solly, Molly, Jolly, Jello\}. Find each set. $$(A \cup B) \cup C$$
Step 1
Since set B is a subset of set A, the union of A and B is just set A. So, we have: \[ (A \cup B) = A = \{ \text{June, Janet, Jill, Justin, Jeffrey, Jello}\} \] Show more…
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Let $A=\{$ June, Janet, Jill, Justin, Jeffrey, Jello\}, $B=\{$ Janet, Jello, Justin\}, and $C=\{$ Sally, Solly, Molly, Jolly, Jello\}. Find each set. $$ A \cup(B \cup C) $$
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Let $A=\{$ June, Janet, Jill, Justin, Jeffrey, Jello\}, $B=\{$ Janet, Jello, Justin\}, and $C=\{$ Sally, Solly, Molly, Jolly, Jello\}. Find each set. $$ A \cup C $$
Let $A=\{$ June, Janet, Jill, Justin, Jeffrey, Jello\}, $B=\{$ Janet, Jello, Justin\}, and $C=\{$ Sally, Solly, Molly, Jolly, Jello\}. Find each set. $$ A \cup B $$
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