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If X and Y are two sets such that n ( X ...

If X and Y are two sets such that n ( X ) = 17, n ( Y ) = 23 and `n(X uu Y) = 38`, find `n(X nn Y)`.

Answer

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If X and Y are two sets such that n(X) = 17, n(Y) = 23 and n(X cap Y) = 38 , find n(X or Y) .

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Knowledge Check

  • If X and Y are two sets, then X nn (X uuY) equals:

    A
    X
    B
    Y
    C
    `phi`
    D
    `X uu Y`

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    A
    240
    B
    20
    C
    100
    D
    120

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