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Given where is the universal set, A and B are subsets of U, then
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a
17
b
9
c
11
d
3
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Correct option is D
nA∪B=nA+nB-nA∩B=12+9-4=17 Now, nA∪Bc=nU-n(A∪B)=20-17=3.Similar Questions
Set A and B have 3 and 6 elements respectively. What can be the minimum number of elements in
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