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12.05.2021 •
Mathematics
Which relation is not a function?
A. {(1,5), (2,6), (3,6), (4,7)}
B. {(4,7), (2,1),(-3, 6), (3,4)}
C. {(-1, 6), (1,3), (2,5), (1, 7)}
D. {(-1,2), (0,5), (5,0), (2, -1)}
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