Question: 2 questions ) Let A, B, C be sets and let : A-7 B and q: B-7c be functions. Suppose *and g injective. Does gof:

2 questions

) Let A, B, C be sets and let : A-7 B and q: B-7c be functions. Suppose *and g injective. Does gof: AT c have be surjective? Either give a proof or a counter example . ) suppose * is injective and g is surjective . Does gof: A Z C have to be surjective? Give proof or example counter)

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