यदि \( A \subseteq B \) तो सिद्ध कीजिए कि- \( (A \times B) \cap(B \times A)=A^{2} \)
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यदि \( A \subseteq B \) तो सिद्ध कीजिए कि- \( (A \times B) \cap(B \times A)=A^{2} \)
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