Question:A = { 1, 2, 3, 4 }, B = { 1, 2, 4 } হলে A `uu` B = কত? 

A { 1, 2, 3 } 

B { 1, 2, 4 } 

C { 1, 3, 4 } 

D { 1, 2, 3, 4 } 

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