If for two functions g and f, gof is both injective and surjective, then which of the following is true [Kurukshetra CEE 1998]

g should be injective and surjective

g and f should be injective and surjective

f should be injective and surjective

None of them may be surjective and injective

If for two functions g and f, gof is both injective and surjective, th

1.	If for two functions g and f, gof is both injective and surjective, then which of the following is true [Kurukshetra CEE 1998]
A.	g and f should be injective and surjective
B.	g should be injective and surjective
C.	f should be injective and surjective
D.	None of them may be surjective and injective
Answer» B. g should be injective and surjective

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If for two functions g and f, gof is both injective and surjective, then which of the following is true [Kurukshetra CEE 1998]

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