Questions
If then the
number of elements in is
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a
5
b
30
c
10
d
4
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Correct option is B
A∪B={1,2,3,4,5},n(A∪B)=5 A∩B={3,4},n(A∩B)=2AΔB=(A~B)∪(B~A)={1,2}∪{5} ={1,2,5}n(AΔB)=3 Hence n((A∪B)×(A∩B)×(AΔB)}=5×2×3=30Similar Questions
If A, B and C are non-empty sets, then equals
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