(4) State which of the following statements are true, vacuously true, or false. (a) (A-B)' = A' - B'. (b) If n is an integer which is both even and odd, then n is equal to 0. (c) If P(A) {0} then A Ø.

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A:

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A: We have given the inequality; 2|7-x| &lt; 2

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A: To Find: A formula for .

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A: We prove following statements by using contrapositive method.

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A: Solution

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