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Question

If μ={2,3,4,5},A={2,4} and B={3,4} Verify AB=ABc

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Solution

AB={2,4}{3,4}={2} ........(1)

Bc=μB={2,3,4,5}{3,4}={2,5}

ABc={2,4}{2,5}={2} .......(2)

From (1) and (2) we have

AB=ABc

Hence verified.

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