If $A = \{3, 5, 7, 9, 11\}$,$B = \{7, 9, 11, 13\}$,$C = \{11, 13, 15\}$,and $D = \{15, 17\}$,find $B \cap D$.
(NONE) The intersection of two sets $B$ and $D$ consists of all elements that are common to both sets.
Given $B = \{7, 9, 11, 13\}$ and $D = \{15, 17\}$.
Comparing the elements of $B$ and $D$,we see that there are no common elements.
Therefore,$B \cap D = \varnothing$ or $\{\}$.
Given $B = \{7, 9, 11, 13\}$ and $D = \{15, 17\}$.
Comparing the elements of $B$ and $D$,we see that there are no common elements.
Therefore,$B \cap D = \varnothing$ or $\{\}$.
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