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{ †ext { If } U = \{ 1,2,3,4,5 , \ldots , 10 \} , A = \{ 1,2,3,4,5 \} } { A Δ B = \{ 1,2,3,4 \} , †ext { then } n ( B - A ) †ext { is }

Answer» { †ext { If } U = \{ 1,2,3,4,5 , \ldots , 10 \} , A = \{ 1,2,3,4,5 \} } { A Δ B = \{ 1,2,3,4 \} , †ext { then } n ( B - A ) †ext { is }


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