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Question

If A and B are disjoint sets, then n(AB) is

A
n(A)+n(B)
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B
n(A)×n(B)
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C
n(A)+n(B)2
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D
n(A)n(B)
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Solution

The correct option is A n(A)+n(B)
A and B are disjoint. So AB=.

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