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If n(A)=20 and n(B)=30 and n(A U B) = 40 then n(A ∩ B) is?
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If n(A)=20 and n(B)=30 and n(A U B) = 40 then n(A ∩ B) is?
Posted:
Thu Jul 14, 2022 8:57 am
by
answerhappygod
a) 20
b) 30
c) 40
d) 10