Relation or not a relation — task. Mathematics State Board, Class 10.

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Let \(A =\) \(\{\)10, 15, 14, 11\(\}\) and \(B =\) \(\{\)9, 8, 7\(\}\). Which of the following sets are relations from \(A\) to \(B\)?

i) \(R_1 =\)

{(10, 9), (15, 5), (7, 10), (14, 11)}

ii) \(R_2 =\)

{(9, 11), (12, 15)}

iii) \(R_3 =\)

{{(10, 9), (12, 8), (10, 7), (14, 11), (9, 15), (14, 9), (7, 8)}}

Did you find an error?

5. Relation or not a relation