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Asked by Ron

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,
12 years ago

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Answered by Steve
A={1,2}
B={1,2,3}
C={1,2,4}
false
12 years ago
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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,

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