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2)

$A \cap B = \varnothing$

$A - B^' = \varnothing$

$A \subseteq B^'$

ก) ถูก

$A \cap B = \varnothing$

$B \cap A = \varnothing$

$B - A^' = \varnothing$

$B \subseteq A^'$

ข) ผิด