Question

if A×B={(a,b),(a,c),(d,b),(d,c).Find A and B​

Answer 1

Answer:- If A = {a, b, c, d}, B={1, 2, 3}, find whether or not the following sets of ordered pairs are relations from A to B or not

If A = {a, b, c, d}, B={1, 2, 3}, find whether or not the following sets of ordered pairs are relations from A to B or not(a) R1 ={(a, 1), (a, 3)}

If A = {a, b, c, d}, B={1, 2, 3}, find whether or not the following sets of ordered pairs are relations from A to B or not(a) R1 ={(a, 1), (a, 3)}(b) R2 = { (b, 1), (c, 2), (d, 1)}

If A = {a, b, c, d}, B={1, 2, 3}, find whether or not the following sets of ordered pairs are relations from A to B or not(a) R1 ={(a, 1), (a, 3)}(b) R2 = { (b, 1), (c, 2), (d, 1)}(c) R3 = {(a, 1), (b, 2),( 3, c)}

Explanation:- R1 and R2 are relations as both are subsets of A×B but R3 is not a relation from A to B as the ordered pair (3, c)∈B× A and ∈/A×B

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