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A. Please calculate the answer for each question if applicable: 1. a=1120,b=[2,1,1,2] what is ba ? 2. A=[101201],a=[1,3] what is aA ? And what is

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A. Please calculate the answer for each question if applicable: 1. a=1120,b=[2,1,1,2] what is ba ? 2. A=[101201],a=[1,3] what is aA ? And what is Aa ? 3. A=[101201],B=352214. What is AB ? What is BA ? 4. =[101201],B=35222141. What is AB ? What is BA

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