Let ` A = {1,2,3,4) " and " f ={(1,4),(2,1),(3,3) ,(4,2)}. ` Write dow – InterviewSolution

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1.	Let ` A = {1,2,3,4) " and " f ={(1,4),(2,1),(3,3) ,(4,2)}. ` Write down (f o f)
Answer» Correct Answer - f o f `={(1,2),(2,4),(3,3),(4,1)}` (f o f) (1)=f{f(1)}=f(4)=2 (f o f)(2)= f{f(2)} =f(1) =4. (f o f) (3)= f{f(3)}=f(3) =3 (f o f)(4)= f{f(4)} =f(2)=1 `:.` f o f ={(1,2),(2,4),(3,3),(4,1)}

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