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Consider the sets A={1,2,3} , B={a,b,c} and a function f:A-B defined as f(1)=a,f(2)=c, f(3)=b. What is pre-image of {a, c} under f. o {1, 2,

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Consider the sets A={1,2,3} , B={a,b,c} and a function f:A-B defined as f(1)=a,f(2)=c, f(3)=b. What is pre-image of {a, c} under f. o {1, 2, 3 o 1,2 o {1, 2} 0 1,2,3

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