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posted by Ron on Friday, April 5, 2013 at 8:39pm.
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,
A={1,2} B={1,2,3} C={1,2,4} false
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