Answer :

It is given that S = {a, b, c} and T = {1, 2, 3}

F: S T is defined as:

F = {(a, 2), (b, 1), (c, 1)}

= > F(b) = 1, F(c) = 1, F is not one-one.

Therefore, F is not invertible

F-1 does not exists.

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