Gate CS-2005 Question Paper With Solutions

Q. 43 Let f: B → C and g: A → B be two functions and let h = f o g. Given that h is an onto function. Which one of the following is TRUE?

(A) f and g should both be onto functions.

(B) f should be onto but g need not be onto

(C) g should be onto but f need not be onto

(D) both f and g need not be onto

Answer: (B)

Explanation:

Gate CS-2005 Question Paper With Solutions

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