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If S and T are two sets such that S has ...

If S and T are two sets such that S has 21 elements, T has 32 elements, and `S nn T` has 11 elements, how many elements does `S uu T` have?

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MODERN PUBLICATION-SETS-EXERCISE
  1. If X and Y are two sets such that X uu Y has 18 elements, X has 8 elem...

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  2. If A and B are two sets such that A uu B has 20 elements, A has 8 elem...

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  3. If S and T are two sets such that S has 21 elements, T has 32 elements...

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  4. If X and Y are two sets such that X has 40 elements, X uu Y has 60 ele...

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  5. If A and B are two sets such that : n(A)=20, n (A uu B)=42 and n (A n...

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  6. If A and B are two sets such that : n(A)=17, n (A uu B)=38 and n (A n...

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