অনুশীলনী ৭
অষ্টম শ্রেণি (মাধ্যমিক)- গণিত - সেট - অনুশীলনী ৭ | NCTB BOOK
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(ক)
B∪C
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(খ)
B∩C
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(গ)
A∩(BUC)
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(ঘ)
(AUB)UC
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(ক)
A∩B = B∩A
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