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यदि A = {1,2, 3} और B = {4, 5, 6}, तो नि...

यदि A = {1,2, 3} और B = {4, 5, 6}, तो निम्नलिखित में कौन समुच्चय A से B में एक सम्बन्ध है? कारण सहित बताइए-
(a) `R_(1)` = {(1, 5), (2, 4), (3, 5)}
(b) `R_(2)` = {(4, 1), (2, 6), (5, 1), (2, 4)}
(c) `R_(3)` = {(1, 4), (2, 5), (3, 4), (2, 6), (3, 6)}
(d) `A xx B`

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