1.

Let A, B and C be three non-empty sets. Suppose f : A to Band g : B to C. Then which of the following is not true?

Answer»

if G o F is one-to-one, then/is one-to-one
if g of is ONTO, then g is onto
if g o f is one-to-one and onto, then/is one-to-one and onto
if f is one-to-one and g is one-to-one, then g . F is one-to-one

Answer :A


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