If X and Y are two sets such that \[(X\cup Y)\] has 60 elements, X has 38 elements and Y has 42 elements, how many elements does \[(X\cap Y)\]have?

If X and Y are two sets such that \[(X\cup Y)\] has 60 elements, X has

1.	If X and Y are two sets such that \[(X\cup Y)\] has 60 elements, X has 38 elements and Y has 42 elements, how many elements does \[(X\cap Y)\]have?
A.	11
B.	20
C.	13
D.	None of these
Answer» C. 13

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If X and Y are two sets such that \[(X\cup Y)\] has 60 elements, X has 38 elements and Y has 42 elements, how many elements does \[(X\cap Y)\]have?

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