Question: If A = {1, 2, 3, 4, 5, 6, 7}, fl = {2, 4, 6, 8, 10, 12}, and f:A B where f =

If A = {1, 2, 3, 4, 5, 6, 7}, fl = {2, 4, 6, 8, 10, 12}, and f:A → B where f = {(1, 2), (2, 6), (3, 6), (4, 8), (5, 6), (6, 8), (7, 12)}, determine the preimage of B1 under f in each of the following cases.
(a) B1 = {2}
(b) B1 = {6}
(c) B1 = {6, 8}
d) B1 = {6, 8, 10}
(e) B1 = {6, 8, 10, 12}
(f) B1 = {10, 12}

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