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Discrete Math

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For sets A, B, C is a subset of U, prove or disprove (with a counter-example) the following: If A is a subset of B, B is not a subset of C, then A is not a subset of C,

  • Discrete Math -

    A={1,2}
    B={1,2,3}
    C={1,2,4}
    false

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