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Question

Identify the shaded region in the figure. A and B are two sets represented by the circles. U is the universal set, which is represented by the rectangle.


A

A - B

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B

B- (AUB)

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C

A-(AUB)

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D

U-B'-( AB)

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Solution

The correct option is D

U-B'-( AB)


The region in the figure is only B. B-A is removing the parts common to A and B from B.

This is exactly what we have in the figure, from B, AB is removed.

The last option also gives the same. When we subtract B from U, we get B.

So the expression UB(AB) becomes B(AB). This is same as BA.​


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