A) 11
B) 20
C) 13
D) None of these
Correct Answer: B
Solution :
[b]Since \[(X\cup Y)\] has 60 elements, X has 38 elements and Y has 42 elements. We know that \[(X\cup Y)=X+Y-X\cap Y\] Or \[60=38+42-(X\cap Y)\] or \[(X\cap Y)=80-60=20\]You need to login to perform this action.
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