Question
Let $A=\{1,2,\{1,2\}, b\}$ and let $B=\{a, b,\{1,2\}\}$. Find the following:(a) $A \cap B$(b) $A \cup B$(c) $A \backslash B$(d) $B \backslash A$(e) $A \triangle B$
Step 1
The intersection of two sets is the set of elements that are common to both sets. So, we compare the elements of set A and set B. The common elements are $\{1,2\}$ and $b$. Therefore, $A \cap B = \{\{1,2\}, b\}$. Show more…
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