Date : (AV B)→~C CVD 'A D Proof : Statement Justification CAVB)~C Premise Premise CVD 2. Premise A ~ B 3. 4. ~(A→D) Preliminary Assumphion 5. 7.

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A:

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A: Given :

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A: If A and B are equal sets then it implies A⊆B, B⊆A . And A⊆B, B⊆A implies A=B .

Q: Evaluate ,C, and P6• (If necessary, consult a list of formulas.) „C, = 0 P.

A: Formula for combination  nCx=n!/(x!(n-x)!) Formula for permutation  nPx=n!/(n-x)!

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A: Let's find.

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A: This is a problem of Logic.

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A: To choose a counter example

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A: We will find the solution of this integration .