Question

If A = {1, 2, 3); B = {2,4} and S is a relation from A to B which satisfies x = y in the roster
3.
a) 9
a) S = {(2, 2)}
b) S = {(1,2),(2,4)}
c) S={(1,2).(2,4),(3,4)} d) None
If​

Answer 1

Answer:

answer is option A.S =[(2,2)[

Answer 2

$Given \: A = \{ 1,2,3\} \: and \: B = \{ 2,4\}$

$A \times B = \{ 1,2,3\} \times \{ 2,4\}$

$=\{ (1,2),(1,4),(2,2),(2,4),(3,2),(3,4)\}$

/* According to the problem given */

S is a relation from A to B which satisfies x = y in the roster

$S = \{ ( 2,2) \}$

Therefore.,

$\red{S} \green { = \{ (2,2)\} }$

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