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Que. 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:f should be onto but g need not be onto
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