Question: ' If I 1. Let f : A > B and g? h. : B > C. Prove that if f is onto and g

' If I 1. Let f : A > B and g? h. : B > C. Prove that if f is onto and g o f : h. o f then 9 : h. 2. Lot f, g : A > B and h. : B > C. Prove that. if h. is onotoono and h. o f : h o 9 then f = 9- 3. Let f : A > B and g : B > C. Prove the following: (a) If f is onto and g is not onoitoiono then g o f is not onoitoono. (b) If f is not onto and g is onetoono then 9 O f is not onto

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