1.

If n(A ∩ B′) = 9, n(A' ∩ B) = 10 and n(A ∪ B) = 24, then n(A × B) = ___________ .

Answer» If n(A ∩ B′) = 9, n(A' ∩ B) = 10 and n(A ∪ B) = 24, then n(A × B) = ___________ .


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