Relations XII
Let A = {2,3,4,……..30} and be an equivalence relation on AA , defined by , if and only if ad=bc . Then the number of ordered pairs which satisfy this equivalence relation with ordered pair (4,3) is equal to
A = {2,3,4,……..30}
and
(c ,d)={(4,3),(8,6),(12,9),(16,12),(20,15),(24,18),(28,21)}
no.of ordered pairs=7
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