Answer to Question #128180 in Discrete Mathematics for jaya

Discrete Mathematics

Question #128180

Let A = {2,4,6} and B = {x,y,z}. State each of the following are relations from A into B.
(ii) R2 = {(4,y), (y,4)}

Expert's answer

R2 = {(4,y), (y,4)} is not a relation from A into B (because in the element (y,4) of the set y"\\notin" A and 4"\\notin" B).

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