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Select the sets that are not functions.

A = {(1, 2), (2, 3), (3, 4), (4, 5)}
B = {(1, 2), (2, 1), (3, 0), (4, -1)}
C = {(-1, 3), (0, 3), (1, 3), (2, 3)}
D = {(1, 1), (1, 2), (1, 3), (1, 4)}
E = {(6, 2), (7, 3), (6, -1), (5, 4)}

Answer :

CrownPeople
The answer is D=(1,1),(1,2),(1,3),(1,4).              HOPE IT HELPS!!!!!!!!!!
D = {(1, 1), (1, 2), (1, 3), (1, 4)}
E = {(6, 2), (7, 3), (6, -1), (5, 4)}

Both of the above are not functions.

Hope it helps!

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