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Question

Let A={x,y,z} and B={1,2}. Find the number of relations from A to B.

Solution
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It is given that A={x,y,z} and B={1,2}
A×B={(x,1),(x,2),(y,1),(y,2),(z,1),(z,2)}
Since n(A×B)=6
The number of subsets of A×B is 26.

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