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Question

Let A and B be two sets such that n(A) = 3 and n(B) = 2. If (x, 1), (y, 2), (z, 1)\) are in A×B, find A and B, where x,y,z are distinct elements.

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Solution

Since (x, 1), (y, 2), (z, 1) are elements of A×B. Therefore, x,y,z ϵ A and 1,2 ϵ B It is given that n(A) = 3 and n(B) = 2

x,y,z ϵ A and n(A) = 3

A={x,y,z}

1,2 ϵB and n(B) = 2

B={1,2}


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