1.

Let A, B and C be three non-empty sets. Suppose f : A to B and g: B to C are two functions such that g o f: A to Cis one-to-one, then

Answer»

F and G are both one-to-one
f is one-to-one g MAY not be one-to-one
f may not be one-to-one but g is one-to-one
both f and g NEED not be one-to-one

Answer :B


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