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Question

If A and B are two sets such that n(A)=17,n(B)=23,n(AB)=38, find n(AB).

A
1
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B
2
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C
3
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D
4
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Solution

The correct option is A 2
We know,
n(AB)=n(A)+n(B)n(AB)
n(AB)=17+2338=2

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