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যদি

A \subset_{-} B

A = not \emptyset

, তবে কোনটি সত্য?

A^{/} \cap B = B

A^{/} \cap B = B / A

A^{/} \cap B = \emptyset

A^{/} \cap B = A

A^{/} \cap B = A \cap B

ANS : 2

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