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The shaded area of figure is best described by? (a)A‘ (Complement of A)

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The shaded area of figure is best described by?

(a) A‘ (Complement of A)

(b) A U B -B

(c) A ∩ B

(d) B

This question was posed to me by my school principal while I was bunking the class.

This is a very interesting question from Sets in section Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

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The correct choice is (b) A U B -B

The explanation is: The region is complement of B.

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