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$Let f : R \to R and g : R \to R be two given functions such that f is injective and g is surjective. Then which of the following is injective?$

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gof

fog

gog

None of these

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detailed solution

Correct option is D

and gog is also not one-one

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Let f:R→R and g:R→R be two given functions such that f is injective and g is surjective. Then which of the following is injective?

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Ready to Test Your Skills?

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$Let f : R \to R and g : R \to R be two given functions such that f is injective and g is surjective. Then which of the following is injective?$