Let $U = {1, 2, 3, 4, 5, 6, 7}, A = {2, 3, 5, 7}$ , and $B = {2, 4, 7}$ . Find the set $A^{'} \cap B^{'}$ .
$A^{'} \cap B^{'} =$
(Use ascending order. Use a comma to separate answers as needed.)

Answer

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Answer

\boxed{\{1, 6\}}

Steps

Step 1 ：A^\prime = U - A = \{1, 4, 6\}

Step 2 ：B^\prime = U - B = \{1, 3, 5, 6\}

Step 3 ：A^\prime \cap B^\prime = \{1, 6\}

Step 4 ：\boxed{\{1, 6\}}