Answer :

It is given that f : {1, 2, 3, 4} → {10} with

f = {(1, 10), (2, 10), (3, 10), (4, 10)}


From the given definition of f,


We can see that f is a many one function as:


f(1) = f(2) = f(3) = f(4) = 10


therefore, f is not one-one.


Therefore, function f does not have an inverse.

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